It's an interesting thread, but after reading the responses, I think there should have been some qualifications.
First, of course, some folks here have transitioned to the other side so one would expect them to be kissing men. No big deal, that would be normal.
Second, some folks here classify themselves as gay or bisexual so again, kissing men would be normal.
Some are GGs and again, kissing men would be normal.
As we look at "kissing", we have different types of kissing. There's the "peck on the cheek" and there's the romantic kiss that is intended to lead to something more.
Perhaps the question should have been something like: "Among straight heterosexual crossdressers, who has engaged in romantic kissing with a man?"