I'm annoyed by quickies

So because I'm still in school and I only get to see my boyfriend when we're both free we tend to pull a few quickies here and there. But I'm over them.. he gets off and I don't and I'm stuck there like well wanna you know finish me too? And I haven't gotten off through sex in a while and hate having to do it by myself. What should I do or say to him so I can finish too and I don't have to head home and finish myself?? Any suggestions????