Forgiveness for Infidelity?

I just finished watching a movie called The Last Kiss and it dealt a lot with forgiveness and trying at relationships and how hard we have to try to make them work. And I started to think about my future relationship and I mean my marriage.

I started to wonder that if my husband or fiance or boyfriend ever cheated on me, would I be able to forgive him. In the movie the main characters are about to have a baby buy Micheal the lead guy, seems scared and confused, while Jenna is planning to buy a house. And while she is dealing with her own parent's separation Micheal finds a young girl that makes him feel ten years younger. He has a fling with her and Jenna finds out. He begs her forgiveness but she doesn't want to forgive him for what he has done for fear it will happen again and because she may never be able to trust him again.

In the end they work it out because they have been together for three years and they're going to have a baby together but at that point I wondered if I could do the same thing in that exact situation and I don't think that I could.

I have seen the effects infidelity has on a marriage and they are not pretty. I don't think I could forgive someone who claims to love me and then cheats on me. I always hear the same thing, yeah I loved you but I did this and it meant nothing. Well I believe that if you love someone you would never cheat on them. And I have also heard the argument that men are men and they will do what men do but I don't believe that either. If a woman can be monogamous why can't a man?

And I know that women cheat too but I'm a woman and he would be cheating on me...I'm not saying women don't cheat. I'm saying that I would walk away. I have also heard the argument well...we've been together for a long time or we have children together and it was just a lapse of judgement but I don't believe that either.

Trust is very important and I don't think I would ever be able to trust him again..and I think I could just walk away..why should I give him a second chance? I don't think my heart could take the ultimate betrayal one more time.....I hope he will be very unhappy and I hope to be very happy but once a cheater always a cheater and I don't believe in forgiving them....