I’m a 21 year old female and I’ve been with my boyfriend for 3 years. I started working again 3 months ago and for the past month I’ve been looking at other guys. It started as harmless looking, but after a week I started fantasizing. Last night my friends and I all went out to the bar to get a drink. My bf ended up leaving early and one of the guys I’ve fantasized about before from work showed up. When 2 am came around we all left the bar and a couple friends and I went to his place to have a couple more beers. We ended up staying there until 7 am. I know he thinks I’m attractive and he knows about my boyfriend. He brushed up against me a few times and it just sent quivers down my spine. We ended up texting each other all day about random things and what we were doing. He tried to get me to come out again tonight but I said no. The thing is, I haven’t been able to get my mind off of him for a second these past 24 hours. I am so full of lust towards him that it hurts. My boyfriend is such a great person and I know he loves me so much. We’ve been living together for 2 1/2 years and I know he plans on marrying me. I’m so ashamed in myself but I can’t help it. I don’t want to leave him because I know what we have is real and anything that could come out of the coworker is just lust. I don’t even have anything in common with him. There is obviously s***** tension between us though and as much as I hate myself for it I wouldn’t trust myself alone with him. I don’t know what to do. I keep crying and I feel like a horrendous person. I’ve cheated in all of my past relationships but my bf doesn’t know that. I thought itd be different this time but its just something in me that won’t let me be 100% faithful. I don’t know what to do….