Dont know if i am over reacting...

I am currently 6 months pregnant and am happily together with my boyfriend of one year. We were at the salon this evening and I was sitting on the couches they have and he was behind me looking at the products on the wall. A very cute stylist Walked by that he knows and he goes " hey sexy" DIRECTLY IN FRONT OF ME. We have never had issues of him flirting with other girls before or saying comments like that before. Like this was seriously so out of character... He finally looks over to me and i give him like a wtf look and he appologized. Should i just leave it where it is or bring it up again. Like it really hurt me. The one thing ive been struggling with lately during this pregnancy is feeling sexy... And tbh i know im just super insecure about myself but i wanna cry. We have other things to do tonight and this has totally killed my mood. Do i let it go and act normal and let my emotions subside?