Anniversary Dinner??

So my boyfriend of two years broke up with because he says someone i was unfaithful with came to him & begged him not to tell me but they showed him conversations & he really believes them but idk who they are. Anyway our anniversary is in Tuesday & i wanna take him to dinner befor he goes out of town with the new girl pursuing him (who hes fucked already 😡) for a week because since all of this I haven't seen him face to face. 
So my question to you ladies is should i go to dinner or just let it go?! HELP!!!