Hello Re, this is the home of friendly ears so you have come to the right place. That is an awful lot of intense things to happen in a short space of time. Having a housemate attempt suicide, and then your father threaten to do it, after reacting so badly to your coming out... how is he now? How is the rest of your family, do you have some support there?
It sounds like things have struck out with the girl you liked. We've all made the mistake where we've liked someone, they haven't liked us back, and we've 'shown our hand' and then felt foolish. Sometimes it is awkward to be just friends after a situation like that, but I think it's the risk we take when we have feelings for someone and put ourselves out there. There will be more special someones.
Can you get any counselling through uni? It would be good for you to have some professional emotional support to talk you through the dramatic times you have been having, so it doesn't start to impact on your studies.