Story time and need advice.

Okay so my boyfriend and I have been together for 3 years... he’s going off to college 3 hours away in the fall and things have been rocky. He has been lying and really shady and I’m over it. We have had huge fights because he’s hiding talking to these girls he met at orientation and I can’t do a relationship 3 hours away on lies. Anyways, we decided to take a break and I haven’t talked to him in over 4 days. A couple weeks ago I met this guy at my work who also works there and he’s super nice and he asked me to go mini golfing with him once I figure everything out with my ex boyfriend. He knows the whole story because he is my best friend. The only bad part is that he is 22 and I will just be turning 18 in August... how bad is that?