I have a gorgeous girlfriend who I love and adore. However I am a very flirtatious person and with a few drinks inside me I become incredibly lecherous. So far (luckily) nothing has really happened but I want to propose to my girlfriend soon but I am so scared of hurting through infidelity. I feel so low about myself after I have these feelings. I'm a pretty decent person other than this, but sometimes I stop and reflect on my actions of the night before and I cringe and am deeply ashamed. I'm sure if my girlfriend knew what I was really like she would leave me. I have to get this sorted or it will ruin my life. I don not want to be one of these men who has a string of affairs and ends up really hurting the ones he loves. Please, does anyone have any tips for dealing with this?

I am sure I need to be able to mentally conjure up negative images to suppress these feelings when they happen. I have tried to think about my girlfriend when I feel like this but I am too weak and the hormones soon override and sanity I try to bring to the situation. It's pathetic that I can't control myself.

I really do need some guidance here. Thank you in advance for any advice you can provide.