Here's a suggestion, go to the gym and work out so yu can build some muscles..also dump the girl, she shouldn't be laughing @ yu for TRYING to defend her. Next time, the stupid bitch can defend herself.

umm ok if there together he minding there own business a little prick has no right to do that... ur a girl and girls get super jealous when there boyfriends flirt with other girls but when she does and a guy gets mad at her she flips out and says there's nothing wrong

I understand you being upset that this guy was flirting, but you don't shove people for that. Also, you shoved him because he looked weaker than you? What the ****? Your own self described weakness tells me that there is a Napolean complex of sorts going on here...

Omg ur life sucks

Wouldn't just asking him to back off suffice? Why would you physically push him? To me, OP, you need to calm down. You've got a good looking girlfriend, I'd be glad if people flirted with my girlfriend. Now, this is not to be confused with the disrespectful flirting such as: "nice jugs, sweetie *creepy wink and a smack to the butt*" then, feel free to defend your woman! Otherwise, just tell him that you're not comfortable with his "introduction." If he gives you sass, then just walk away.

Why did you have to push him?

You should hit the gym and lift more

Thing number 1: don't be so overly jealous Thing number 2: if you ARE so overly Jealous, learn Krav Maga so you get the living shit beaten out of you

Regardless flirting is still bad, most women respond to "love signals" with their ears, just about any romantic crap can get them head over heels

Strength doesn't win fights. Ability is far more important. Also mental state. When you go berserk (mentally) its amazing how many guys you can take.