Most Helpful Guy
Yes, you're right, if you truly love someone, you can never ignore them. Ignoring the one you love means hurting them in some way, and you will never do that to the one you love. Hence, you're right I don't think he is serious about you, don't pay any attention to him.
Most Helpful Girl
Dont get sucked back in. if he truly wanted to patch things up he would have done so by now. He was probably just lonely and/or hornet but doesn't have your best interest at heart or he would respect your wishes.