Before you contemplate another relationship - either with this person or someone else - get yourself into therapy. You described feeling jealous when he is with other female friends, and this is a sign of insecurity that will poison any attempt on your part to have a relationship. Address it with a professional first, and don’t pretend that “reflecting” on it on your own will solve the problem. You need to get to the root of it.

You at least possess the insight to recognize that it’s your issues that are causing the problem. There’s no shame in admitting you need help in addressing the root causes of those issues. You and your next partner will benefit from getting proper help.