How to get out of the case of blues?

Right off the bat, I would like to say I am not suffering from depression. Trust me, I have and this feeling is not the same. I just feel down and see life the same as a pattern that ends the month. School just became so much easier, as the year goes by fast. I am in college and learned Spanish, what a pain I must say. I tried to get a girlfriend but I still haven't matured to really want a relationship of a such. My friends try to get me out of the house but when they do, they end up setting me with a girl. On one occasion, they thought I was gay and brought in a guy lol I was quite embarrassed for them to think that. Anyways such and such I don't know if I should let it past or try and do something about it, which I don't know what to do. Where you guys come in and tell me some tips to get out of this mood.