Is it ethical to use this guy as a wingman?

A certain acquaintance of mine has an uncanny knack for breaking the ice with women in bars. I’m not naturally extroverted and getting things started is very hard for me. On the rare occasions when I can pull this off with a woman when I’m alone, her female friend c***blocks me (why do women do that?). So I need a wingman, and this guy seems like a great candidate.

The problem? He’s just a little bit… creepy. I probably would want to keep him at arm’s length if I didn’t want him as a wingman. I would definitely not set him up with a close female friend. Once I arrived at a bar and found him hitting on a woman that I knew was married. After she had brushed him off, I told him that she was not available. He said he didn’t consider married women off limits.

So I guess there are two problems here. One, am I wrong to hang out with this guy mainly because he might be useful to me, and two, am I wrong to help this guy get women when I have doubts about his character?