Please help...

So I would normally never post to a chat board but I don't know where else to go...

I don't really have any friends because my fiancé basically told me to let them all go because they were selfish and immature (keep in mind I'm only 20), and I'm just crying and crying because I feel like a horrible person.

My SO and I have been together for over two years and he just proposed on New Year's eve, and I love him more than anything but it doesn't even feel like we're together anymore. He's always on his computer and I've tried telling him I need more time with him and more attention and he says he agrees and that we'll work on it but we don't.

We've been living together about a year and it just feels like were roommates.

And when he does start to show me attention it's all sexual, and when I don't want it he gets upset and says that I have a low sex drive and that it's weird that I'm so young and don't want sex but it's because he doesn't make me feel beautiful or anything anymore, we don't even get flirty with each other anymore.

And now there's a guy who I've flirted with before but nothing ever happened and we've been friends for about 3 years, and he's so sweet and he makes me smile and feel sexy and beautiful. And I feel like an awful person because I don't want to hurt my fiancé but I'm having second thoughts about being with him.

Please help me try to sort through this because I honestly don't know what to do....