I've been seeing this guy and the sex is amazing for us both. But he has had issues in the past with sometimes just not being able to finish even though he's really enjoying himself. He is circumcised and when I'm giving oral is when he's got in the closest to finishing. I can taste it and I can see it, it barely comes out of the tip and it's completely white so I know it's not precum. But he will not finish no matter how long we keep going at it and how much he seems to and says that he likes it. Is there a set of known possible reasons and solutions that I could bring up to him and try to figure out together? Thanks in advance.