Lately whenever I like a guy and see a potential it happen to be married?

Soooo I have been single for a year and a half and I met this awesome guy, funny,sweet,smart, totally my type, and he seemed to like my company.He used to make me laugh really hard, we always had a great time while working.One day I found him in fb and he was not only married but with two precious kids.That was devastating. Fast forward, 3 months later,I changed rotation site(I am 4 year pharmacy student) I met this interesting guy, again good connection. Whenever I am next to him I feel the sexual tension.I have seen him staring at me in more than one occasion.The other day we were working together he mentioned that his wife didnt want to have kids and I was again heart broken.

At the same time a 25 years old guy started working with me, he is not exactly my type but he was always supper sweet with me. We have long conversations he never mentioned his wife until I sent him a friend request to instagram, his account was full of pictures with her supper young wife. Like WTF??????

The second guy told me something really interesting.... He said that sometimes good looking women have a hard time finding partner because some men including himself were scared of getting rejected by the women.

I don’t know why he brought that up.. he talks a lot..I am not particularly beautiful.I find myself cute enough but average looking...Anyways I just need to share this because is frustrating.