Homosexuality

Homosexuality is really confusing and unusual. Before anything else, this is a personal rant and there is no way that I am offending anyone. Please. 

I feel really uncomfortable when there are homosexual people that I get to encounter. I had a classmate who is now a transgender woman and somehow there's nothing weird that goes in my mind about her but how come to other strangers? Especially in my same gender. I respect them completely but there will always be that awkwardness in proximity. Most of all, homosexual couples. I don't have any issue when people post around the internet but when I see couples in person, there's that feeling again. Why does it vary that much? I am not against homosexuality because who am I anyway? It's just that it is so eccentric when I see them in person rather than through a screen.