Why does he want to kiss me so bad?

So 3 months ago my friend admitted to having some feelings for me. We went on a double date and I really didn't feel anything, but his feelings for me grew stronger. Fast forward to now, I finally told him that I'm not sure how I feel and he said "maybe a kiss would help?" He keeps trying to plan how we will do it, and I told him to just chill and let it happen. Literally, every other text, he's like "I want to kiss you" "I'm so excited about this" When I try to change the subject, he takes it right back to us kissing. He would be my first kiss, and he is super excited about it. I don't mind him kissing me, and I'm flattered he wants to. I just want to know why... and how would I kiss him?
Why does he want to kiss me so bad?
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