My best friend's boyfriend was hitting on me.. should I tell her?

Anonymous
My BFF and her boyfriend have been having problems and they broke up but they still see each other and have sex... y idk? But This is the first guy that she actually Likes a lot.. a lot! Anyways we go to his house every weekend and chill there with his friends and drink. I kinda noticed he has been looking at me weird but Last week my friend was in the living room, and I went to the kitchen to get a beer and he came with me to open it, Then he grabs me by the waist and pushes me against him (well he tried, I pushed him away) I just left back to the living room, He still looks at me like he wants me... so I don't know should I tell her? She really likes him a lot and I don't want her getting jealous or should I just let it go until he tries something really inappropriate?
My best friend's boyfriend was hitting on me.. should I tell her?
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