ADAM LEVINE is marrying model BEHATI PRINSLOO next month, and he wants to do it with a clean slate.  According to "Us Weekly", he's been contacting ex-girlfriends to make amends.

 

 

A source says, quote, "He apologized for how he treated them."

 

 If an ex came to you, hat-in-hand, asking for your forgiveness, would you give them the satisfaction?