Wrong person to ask, here. I do not think random breeding is a good thing, and if you cannot control who breeds who, (you think he may have bred your mare, but not sure?) then you should not have a stallion. Perhaps a bit harsh, but there are WAY too many average horses out there needing homes. Much like spaying/neutering puppies. I am a HUGE advocate. If you have never been, try going to Fingerlakes Auction. Perhaps it will open your eyes, and it is pretty close to you.
While I am here, just a question-is your black and white paint gelded? He is just listed as "male", so wasn't sure. If not, is it not possible HE bred your mare (or any of your other horses?)
Sorry, but irresponsible breeding sets me off.
Signature undergoing edits. Please standby.......