Even if you are overweight than others in real life, I think you are "over" weight due to your kindness @_@ (yes, I found people in online are sweeter than people in real life... :P) hehe so NO WORRY ABOUT YOUR WEIGHT!! :P
Yeah. In response to his question, the 130 lbs he cited for a girl who is 5'4 is in the healthy weight range for someone that height. I don't know where he gets off saying it's obese.
100 lbs is actually not average - it's very thin. I'm 5'4 and am 107 lbs. I am very thin. I have bones sticking out every which way. I couldn't imagine being 100 lbs. I'd blow over. :P
The average guy behind the screen of a computer is just that: an average guy. He's likely to be at an average weight. On dating sites though? I'm sure both men and women shave like 10 lbs off their weights :p