とキスしたことある

have ever kissed …

→ と
phrase Rare #45,307
have ever kissed … と marks the person being kissed. This is a casual form of ことがある, used to ask whether someone has had the experience of doing something.
JA: 好きな人とキスしたことある?
EN: Have you ever kissed someone you like?

他のやつとキスしたことある?

Have you ever kissed someone else?

他の男とキスしたことある?

Have you ever kissed another guy?

女の子とキスしたことある?

Have you ever kissed a girl?

他の子とキスしたことある?

Have you ever kissed another girl?