Boyfriends flirty personality vs. first day of work

Alysse

So me and my boyfriend have been dating for a long time now. We've had problems in the past with flirting. Now he has a job and I am extremely scared that he will flirt with other girls all the time. He works window and cashier...I talked to him about it he said he wouldn't but honestly, that didnt reassure me at all...

What should I do to take my mind off of it?

How should I cope with this?