How far would you go to keep secrets in a relationship? A friend of mine has been getting to know someone almost exclusively through the internet and the person he/she “talks” to does not want to talk on the phone or meet often as she/he feels that this can deepen their relationship, which is not the desired intention.
What advice can I give her/him?
FG grow up will ya 
tell him/her to try and be friends with his/her wife/husband instead.
In my opinion, talking exclusively on the internet isn't exactly a "relationship" to begin with.
On a more serious note advise him/her to not expect anything from that person. If he/she has any expectations then be prepared for the worst since the other person does not want to take this any further than the internet. Probably just killing time with your friend. If your friend has the patience and desire to carry on inspite of that and doesn’t have any expectations then more power to him/her…and a flower too 
Red flag!!
someone i know was talkignt o some dude she met on some desi matromonial site, emailed and all, heck they even spoke on phone but he made some cock and bulls otry about why he could noty give her his number. I told her it was suspicious..anyways turned out the guy was a fake, wrong name, wrong info about himself, everything.
this dude is either not serious, or a chicken, or is unsure...either way there is some thing that is not known to her. I would say proceed with care..set a time frame u are willing to give yourself and to the other person to move on to the next step or to end it or back off. No use being in a 'relationship" which is not going anywhere
^Great advice folks. Fraudz, I agree. Will pass on the info. to her which will be most appreciated, I'm sure. Thank you.
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*Originally posted by MehnazQ: *
In my opinion, talking exclusively on the internet isn't exactly a "relationship" to begin with.
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agreed.