"Love to love or love to feel good?"
I've been thinking, but I'm not sure I know what love is...
Anyway, even so, I think it's mostly the same thing... if it is actually 'love'. Of course there is the biological thing, which is feeling good, but that's really sex, isn't it, when it boils down to it? If you love someone and they love you also, you both feel good.

Of course, if you have unrequited love, that feels bad, but I'm thinking of situations in which both people love...
I think they are the same. I think if you try to be too altruistic and 'love to love', you might end up trying to kid yourself you 'love' someone out of pity, or because there is some other reason you think you 'ought' to. In a good relationship I think it's the same thing.
However, just 'love to feel good' can become a selfish thing if you only 'love' the other person because you get a good feeling... that's only caring about yourself and not really about them... I'd say that isn't really 'love' at all. But I don't think that's what you meant in the OP.