Re: Need help to save my engagement :(
Do an istakhara with the niyaat that you want to marry him and you'll get a pretty good idea of what to expect if you do go ahead and marry him. IMHO, istakhara is exactly meant for stuff like this, when you need some divine help to make the right choice.
PS: I can already feel the feminists read to pounce, declare the guy a looser and talk you into "you can do so much better" stuff. Go for istakhara IMHO.