No, it's not just your man, guys I've met have been the same with me. Sent me back to hubby with cum in me and on me. Hubby likes it too so all good.
When I started out I deliberately tried keeping the cum on me and in me as long as I could, not showering and even wearing waterproof panties at one stage!
Have been to work with guys stuff still visible on me if people looked. Cums a big turn on!