Considering to leave the person because the disorder has become too much is common. If you want a person to change, you must first realize how hard it is to change yourself.
Ending any relationship is difficult, and deciding to end a relationship because of a person’s mental condition only complicates things further. While treatments for bipolar disorder can help control the condition, it will be a constant battle throughout his or her life. Michael Brodsky, medical director of Bridges to Recovery—a crisis stabilization center with several locations in California—said while people with bipolar disorder are known to be creative, charismatic, energetic, and inspirational, they can also be unpredictable, promiscuous, inattentive, and self-focused.
Over time, you will learn the nuances of the disorder.
To go back into what sounds like a very volatile, unhealthy relationship is not the "right" thing for anyone, in my professional opinion. The odds of that are not good at all.) He is back on a dating website that I met him on? I really can't answer what is normal for him, although based on everything else you described, it is not at all surprising.
Are you hoping or assuming it will get better with time; that he will change?
The other one lasted about 3 months and he saw no future with her. He has no clue what a relationship is all about and he is selfish I think, it was too much work and he ran. So he has come through a lot in the past and I commend him on his accomplishments.
I have no clue what has happen except one day he says he loves me and he is the world's biggest jerk and he is going to work on his actions and words, then he dumps me.
The love and support of family and friends plays an important role in schizophrenia treatment.