How Adderall affects relationships

I am in a long term relationship with someone with ADD. He takes Adderall on a somewhat varied but predictable schedule. Most weekdays when he attends school or work he takes it in the morning, but on the weekends he prefers not to. This habit of his really caused problems in the beginning. I couldn't seem to figure out who he really was. When he took the medicine he was calm, relaxed, focused, and polite. He didn't always pay attention to me, and his mind always seemed to be focused on something else. On the other hand, on the weekends he became very rowdy and obnoxious. He could be rude and quite often his behavior embarrassed me, yet he payed more attention to me and was much more fun-loving. I felt as if his dual personalities were accentuated by the fact that he didn't take his medicine regularly. Perhaps on the weekend his ADD behavior was more emphasized because he was going through some sort of withdrawal. It took me a very long time to start to understand this behavior, and how I was supposed to react to it. I have now had to get used to not knowing exactly what personality I am going to be spending time with, but I have to admit, I have grown somewhat fond of the situation. I have found different characteristics in each behavior that I really love, and that I know are truly him. His fun, outgoing, spontaneous side can only be uncovered when he doesn't take the Adderall. Yet his thoughtful, caring, intellectual side only comes out when he has the Adderall to help him sort through his thoughts. I guess I wrote all of this because I am curious to see what others are going through with this problem. It can be very wearing dealing with dual personalities, and I don't know if I would prefer him to make up his mind on whether or not to take the medication. Are there reasonable and effective ways of handling ADD without the use of Adderall. I am still just very confused by the whole thing when I really start to think about it.