For me it wasn't so much doing things separately--we'd sort of always done that. H had a lot of outside interests--which I don't think until recently involved affair behavior. So it was either develop my own or be bored. Actually I resented his many outside interests, because with a child at home it meant I was quite limited in pursuing my own interests. So I deferred many of them. However, over time I came to a realization that H really didn't have the capacity for being supportive much of the time, or at least not in a way that was easily recognizable. At the very beginning our relationship was quite codependent, but while H was away being a monk for a couple of years, I did a lot of healing and got to know myself. He says when he returned and our relationship was renewed, it didn't feel as "close" to him. Partly because I had some difficulty dealing with his abandonment, but more because I was just healthier. I struggled with that balance between enmeshment and separateness, and I think ultimately I became fairly self-differentiated. Eventually I will sort all of this out--what was differentiated, what was avoidance, what was response to being hurt a lot--i.e. what was healthy and what wasn't. Right now isn't the time to do that because I'm not exactly objective.
BTW--it's so true, your last statement. The opposite of hate is indifference. There's just so much of that in all my relationships (except with D12) and it's hard to take.
M60 H52 D20 M14 yrs OW-old gf from 1986 bomb-5/18/08 H filed for D-9/10/08 D final 4/24/09 xH remarried (not OW) 2012