If the trust is there, it doesn't matter what your ex boyfriend does. You spend more time with your boyfriend then you do any other person, so I don't think that is something to be concerned about. You know you love him, you are very open, how can your current boyfriend argue with that?
As for getting your boyfriend to stop, his patheticness has reached a new height. Why haven't you guys both blocked him yet? Keep blocking him until he stops. I hope you aren't still talking to him after all this. You should have more respect for yourself and cut out any bad negative influences in your life. Don't allow them to stick around.
Waking up next to a beautiful girl,
Step outside and say hello to my beautiful world.