Get over yourself man. 15 vs her 5? You've had 3 times as many partners... If it bothers you then suck it up and end it. But if you do, know full well your being the very definition of a hypocrite.
"A person who acts in contradiction to his or her stated beliefs or feelings"
"We are all connected to each other biologically, to the earth chemically and to the rest of the universe atomically.
That’s kinda cool! That makes me smile and I actually feel quite large at the end of that.
It’s not that we are better than the universe, we are part of the universe. We are in the universe and the universe is in us."
— Neil deGrasse Tyson