[ownerspet]

Are you thinking to much into this or did you not do the right thing?

First off: I'm assuming you and your significant other talked about this. Furthermore this is something you both wanted, she wanted to be with the other guy and you wanted to see her with the other guy. So I'm assuming communications are wide open between the two of you.

Next: If he is bigger than you, so what, after all at the end of the night she's still going home with you. So that wouldn't worry me. But with the cocky attitude, some are going to be cocky like that.

Finnaly: Assuming the communications are open between you and your significant other, you really need to let your significant other know that you are uncomfortable with his attitude. After all, you don't want this to become the norm, because it could really cause you and your significant other.

To summarize: Your communications between the two of you are open, you're uncomfortable, and I'm telling you to go talk about it before it gets to stressful for you.