My boyfriend went out with me because of a bet?

Yesterday my best friend told me she heard my boyfriend friends talking about a bet they made for him about going out with me for at least 7 months ( because I picky of the guys I want serious relationships with ) well I talked him and he said it was the truth but he liked me when they made the bet and he loves me now.I'm not sure what to do because he still has one more month to complete the bet .Should I believe him and stay with him or brake up with him.
My boyfriend went out with me because of a bet?
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