I feel so awful

I feel so awful and unclean..

As everyone knows (nearly) i'm enaged to my soul mate Marcus and i'm on here a lot talking about him, lol. I love him to death and we're getting married June 14th 2009..

But last night, i was on his sisters hen night. (He has three older sisters and the middle one is getting married next month) Me and Mel (the 21 year old and the youngest) were at the bar getting another round of drinks in. This was the third bar and we were pretty tipsy, but i still knew what was happening. I wasn't that far gone, lol.
When two guys came up and offered to help carry the drinks. Now Mel is recently single and was happy flirting away and i stood there like a lemon, just wanting to get back to the others, when the other guy, he was plastered, lunged forwards and tried to kiss me.
I stepped backwards and bumped into someone else who pushed me back and i knocked back into the drunk guy who put his arms around me and started slobbering on me. It was horrible and i pushed him away and just ran back to the others and sat down. I was so shaken up.
Some other guy has kissed me when the only other person to do that in over two years has been Marcus.
I felt so awful for the rest of the night and i'm so scared to tell him in case he gets the wrong idea.
I know i should just tell him what happened but i don't want to hurt him or make him feel like i can't be trusted.
Everyone says it takes two but i honestly didn't kiss him, i just pushed him off and legged it..

Any advice? I feel so awful

Well if you pushed him away then I'm sure Marcus will understand. It's not like you said "Hey pal, want to french me?" It wasn't you who initiated it and you clearly didn't want it. It's no big deal unless you keep it from him. In which case if he finds out then he'll think it meant something to you.

Tell him exactly what happened and how you felt and feel. He may not be very happy about the whole thing, but I'm sure he will appreciate your honesty.

I agree with those above me.. I'm sure that if you told him exactly what happened that he can't be angry on you, but on the guy who did it.

^Took the words out of my mouth.

I realize where you're coming from, but not telling him in todays society is an admission of guilt. Maybe it shouldn't be, but it is.

Why wouldn't you tell him if you did nothing wrong? Maybe it's not the most logical first response but it is the most common.

Well basically what all the others said....

If you tell him the truth then he has to believe you!!!! if he doesn't then thats just wrong....I'm sure he will understand that it wasn't ur fault...

Thank you everyone for the advice.
I basically told him exactly what i've told all of you and he laughed at me and told me i'd been worrying for nothing.
He agreed with what most of you were saying and told me i was being silly so i feel so much better now.
I can concentrate on the rest of my A levels better now, lol
Thanks everyone, i know it was a stupid thing but i have very strong morals about relationships, lol
Thanks again
*Gem*