What is the Nike slogan? ~ Just do it. The ONS with a known or unknown, bought for or not man. There must be lots of good looking available men around you, yes? I think you can't because of still having feelings for your ex, you need to even do this so it forces you to move on & live a full life. The memory of your ex is holding you back. You don't have to feel ashamed or guilty, just be safe with whatever you choose to do.
((hugs))