This is something that I had a huge problem with in the beginning. My SIL who is 5 years older than hubby would always take him out with her when she went to movies with her friends or for dinner etc. She is divorced and at first I didn’t know anything at all about them so I thought that it was because her friends probably had their husbands accompanying them so she felt lonely but later I found out that the friends she used to hang out with were all unmarried and all older than my husband (3-5 years). All her friends were on his fb and they used to flirt with him and he would flirt back. That was before I came into the pic. When we started seeing each other we had countless fights over it. He has other sisters and none of their friends were on his fb or flirted or talked too freely with him. He stopped talking to them and even deleted all of them from his fb. It has been almost a year since we got married and have been living far far away from in laws so these things have not been a problem for me until now …
My SIL is now getting married and we are going and when hubby was talking to her this morning she said how XYZ was missing him so much and would be so happy to see him. XYZ is one of her countless friends that used to flirt with him. We already had a talk about it and I told him that if any of SIL’s friends try to flirt with him I will tell them off without giving a damn about SIL at that time. He thinks I am being funny. I don’t know how to communicate this issue with him so that he takes me seriously … 
Re: SIL's friends flirting with hubby
You can't control how they'll behave....but your husband (unlike them) is married and should honor that commitment to you. If he were to flirt back....would you still put all the blame on the girls? And what would you constitute as flirting?
Also, you said he'd flirt with them before you entered the pic. After you bacme his girlfriend.....if he didn't flirt with them (even if they were on his FB)....then there wasn't a reason to get mad at him especially if he wasn't reciprocating. And now he's married to you.....and maybe he's amused becuase he thinks you're getting ahead of yourself.....he hasn't seen those women yet and for all you know they may not try anything or even if they did he may not flirt back. I admit that it's easier said than done...but try to stay more in control of your emotions when you're around those women....be the classier and more secure person and hold your own.
Re: SIL's friends flirting with hubby
I know he won't flirt back and I know I should just laugh it off if they do end up trying to flirt. If they were random strangers I would find the whole thing amusing. It's just not amusing when it's my SIL's friends doing the flirting. My SIL has a habit of putting these girls in his face and she especially does it when I am with him and it just makes me want to scream and tell her and her friends off so badly :@
We both know I wouldn't say anything in public but the fact that my SIL would start again knowing that I am coming is upsetting :(
Re: SIL's friends flirting with hubby
I dont think you should just laugh it off if they do end up trying to flirt! why would you? That he deleted the friends from FB after involvement in you tells that he knows there is no space in anyone's life left for any xyz after the SO enters. I hope he abides by this rule. You have done your part by warning him already about not to be flirtatious with his sisters' friends. If he tries, grab him by his ear take him to a corner and remind him of the fact you dont like/ want to stand this shy**.
You best plan can be avoid sitting with the sil's friends while you people are there. Just try to b with other siblings and participate in the shadi prep which is the actual fun over there. Tell your husband straight away that you dont like the sil's company for this very reason and its better to avoid them if you people want to avoid any unneeded argument or bitter situation.
Does the SIL have control issues. That is really bad encouraging your friends to flirt with your younger brother. Whats the point to take attention away from you. Do people not have the fear of god in them? What happens if your SILS new husbands starts doing the same thing? How would your SIL feel? Remember what goes around comes around....
Re: SIL's friends flirting with hubby
Can you punch your sister is law in the face?
Your husband will know you are willing to fight for him.
Re: SIL's friends flirting with hubby
Flirt with your SIL and her friends.
Re: SIL's friends flirting with hubby
U r over reacting a bit.
Look at it this way. Hes married you. He chose you. And as long as he knows his limits and u trust him then dnt worry. If he steps out of line make it clear you dont appreciate it but if he doesnt respond to their flirting etc then relax and enjoy the wedding