to me it doesn't sound like he ever really stopped using. the almost psychotic mood swings, the "panic attacks", the changing his mind every 30 minutes.
it also sounds like he spends a lot of time sleeping indiscriminately with other partners when he gets high. that tends to go with the territory. that means he puts his own health at great risk, but if you two have been intimate, YOURS as well.
none of this is good.......for you. none of this is what love looks like. this IS what active addiction looks like.