I'll start by saying thanks for this awesome forum and I appreciate the help. My situation is as follows, but first a little background. I have been dating an awesome girl for around a month now. She is 7 years younger, a hb 9.5 and is overall great to be around, fucking beautiful...by far the hottest girl I have ever dated . I am by no means attractive I would say a 6. I work with this girl and I let her chase me then worked my magic and thats where we stand(non exclusive I should mention).

The problem is this, yesterday I went for a beer with a few friend, I live in a pretty small town so everyone knows each others business and their pasts. Anyway while at the bar I see my girls ex boyfriend(I know its her ex because we saw him out one night and he stared me down a few times) and she told me that they were high school sweet harts that dated for 2 years...but he cheated.

So I see him again at the bar, this time without my girl and he confronts me on my way to the mens room. He then proceeds to ask if I'm dating Mary and I say we have been seeing each other. He then gets slightly aggressive(closer to me when talking) and tells me that he used to date her in high school(7 years ago) and that they have recently been in contact with one another again. I act like its no big deal because really to me it isn't and I tell him its fine that she can be friends with whoever she choses. Then I end the conversation and go to the mens room.

Few questions
-One do I tell the girl I ran into her ex and what he said?
-Do I ask about her talking to him again? we are not exclusive...

I will also add that normally I would have been much more of a smart ass to this guy but he is probably 90 lbs heavier than me, 5 inches taller and an ex wrestler, 8 years younger and would clearly beat my ass. I'm small, not tough and didn't feel like getting beat down.

One last thing the girl I'm dating has a history of cheating, she slept with a married man twice her age.

How did I handle the situation and where do I go from here?