Adult Online Dating Question – Cultural Issues?

We were matched on eharmony and have been exchanging e-mails since mid December. He is 39 and I’m 34 both single educated professionals. Both living in the Caribbean but on different islands.We have swopped photos and exchanged texts..nothing too deep or hot and heavy. We want to meet and he plans to fly to me though nothing concrete.Its going good.He wants to ‘get to know me’ online and then to meet and for there to already be some closeness so that if there is physical chemistry then the relationship can progress smoother and faster. We are looking for life partners so the search while fun has a real intention. I need advice because I feel uncomfortable opening up too much to a man that is likely to be having simultaneous online or maybe in person relationships..I am easier with him coming to meet me as us still strangers.This is partly cultural as this is not part of my culture, I cant ‘play’ with men and feel uncomfortable even cyber dating like this.

Commitment Issues? Lonliness? Wtf?

Seventeen. Never had a boyfriend, or any deep relationship for that matter. Just never know how to deal with people and act around them.
But I feel so lonely. I hardly talk to guys in real life, and don’t really have any guy friends. I think this is because I don’t talk much, and know I am rather unattractive and my lack of confidence shows too much. Since childhood. I’ve never trusted myself with anything. Always been a failure.
Anyway. The real point of this question. I’ve had people flirt with me online. But I just try to respond in my own way. Because I’m bored and lonely, and have no one else to talk to. And I’ve been ‘asked out’ twice online(Yes, wtf indeed. o_o), both of which I rejected. Probably because I don’t believe in ‘internet dating’; didn’t think this would ever work; and just didn’t feel the same way. And I just know that I’d be a big disappointment. Anyway, when I turned these people down, they seem to have stopped bothering to IM me as much anymore. I know it’s sad, but I miss it.
So I’ve just gotten in this situation again, and this person keeps ‘flirting’. And I just respond in my own way. And the person just twists it around and carries on. I’m afraid the whole thing will happen again. And the person will just ignore me or something afterwards. I enjoy ‘talking’, but don’t want anything more. Could this mean I’m just scared of commitment, and have too much distrust in myself? =/ I’ll probably end up blocking them to avoid ‘hurting’ us both. I’m not too keen on the whole ‘internet dating’ thing at all. But is blocking too harsh?
Sometimes I try and let people believe that I’m a lesbian, so they’ll leave me alone, and even in real life, so they stop wondering why I’m always single and never talk to guys.
Yes the internet situation thing is pathetic. I need to get out more. Yes I need to meet people. But I can’t. And I’m scared. Don’t think I’ll ever be able to have a real relationship. I freak out when anyone even touches me or comes too close, even family/friends. I freeze up in social situations, even with relatives.
I think I’m gonna be alone forever. I tell people I’m happy with this. But deep down, I really am not.
What’s my problem? Haha. =/
Sorry for this annoying question, just had to let it out.