Replying to Casinos... fuck

My fucking roommate in univ. constantly asks me to go.

we went today at 8pm, hit niagara and fallsview, came home (15 mins each way), went out for pints with the rest of the house (students, 5 of us) and then after we end up going back cause he wants to win more money.

Fucked?

I always say no. He always talks me into it. How do i get off this shit. Im not losing money, i always come out even or just up which is sick, but we go several times a week. I just have to cut it and not go for a while? Its just a spurt right now?