Am i being irrational?

[Choke-Chain]

I've been dating this girl for quite some time now.
But, just now i've found out about a lot of guys shes been with.
It seems like everyday i find out about a new guy shes been with.
some of them my very good friends.

Its been really bothering me lately.
It started out just a thought in the back of my head.
But, as time grows so do the thoughts of all the other people shes been with.

Which brings me to my question. am i being irrational? or should i just try to forget about it as best i can and put it behind me.

[UncleAlex]

I had the same problem with my ex-girlfriend. She was hanging out with her friend (a guy) a lot, but most of the time, in these situations, it's paranoia, so I just suggest you confronting her about it.

[Mr. Smithers]

If she's been with that many guys, I would be surprised if she's not with one while she's with you. I would totally talk to her about it.