Ok so,

Basically my boyfriend of 4 month dumped me a like.. 5 days ago. See the thing is I was hurt but at the same time I kind of already had a thing for another guy, I know he likes me back and stuff too. So how long do I have to wait for this not to seem like just a rebound thing? I have enough gossip about me at school and don't need more. Lol. Any suggestions?

Give it a week at least. If you don't want it to seem like a rebound, give it some time. Get to know the other guy, hang out with him, don't rush into a relationship with him. Become friends FIRST and that will help your relationship in the long run.

Hope this helps!