Dating for Recovering Fundies

[IFB No More]

Now I have some questions. I *know* I might have asked some of you before, but here they are:
- Have never been involved in a relationship, not even a casual one. I'm in my 20s and going into the mid-20s quite soon. Still in college, but my social circle is very small back in my country. I thought coming to the USA might make things improve, but because of my socially awkward nature and various cultural differences, I am making little inroads in spite of how hard I try.
- There are some who tell me to start to date right away especially in college where it's good to meet many new people. Find someone whom I am interested in, and then ask them out. Yet my relative (also a young mother) opposes that and tells me to "do nothing" - just meet new people and slowly a girl will indicate her interest, and r/s should if possible be formed from close friendships. She tells me I'm too desperate thinking of these things and enjoy my single years while I still can.
- I do not know who is correct, or whether any of them are correct in the first place. I think there are many factors that make it difficult for me - dislike of criticism or budging out of my comfort zone is one huge weakness. I don't know how to properly express my interest towards a girl I like and approach her - this, plus the "you're too desperate" quotes by my relative is the reason why I have never approached any girl as of now.
- People over here in college (both guys and girls) largely say "Hi" to me and otherwise leave me alone. They get very friendly initially but then leave me alone otherwise. Yet another question - why are *they* so close to each other? Is it a problem on my part or a problem of theirs? This is the case whether in the US or Singapore. I fear this problem will seriously affect my social circle and love life (if I ever get one) in the future.

Would desire your advice and help, please.