Sparklypandaz, you sound as though you're talking about a virtual stranger. As he's your ex, surely you already know what he likes and how to flirt with him. Not to mention, you should be able to TALK with him about this instead of messing about like you are.
Honestly, if you can't manage communication, flirting and getting your point across with someone you should know so well, I don't hold much hope for the relationship.
Never regret anything that has happened in your life. It cannot be changed, forgotten or undone. So, take it as a lesson learned and move on.