Kinda fun to think about, to rank TNG characters by the quality of their relationship episodes:
Picard is probably top for me. Vash, Crusher, his wife in The Inner Light... all good episodes.
Riker I guess was never meant to be taken seriously in his escapades. The only serious attempt I can think of (the androgynous race) was a stinker though.
Data: Yeaaah. The episode where he is the rebound guy for that ensign is like nails on a chalkboard.
Geordi, he should have just given up. Even though, I guess he kinda personified the standard Trekkie.
Wesley, the one I can think of (The Game) is actually not too bad.
Worf's love affairs were kinda weird overall. Keylar, then Troi, dunno, it kinda was all over the place.
Crusher, two words: Sub Rosa. Nothing can overcome that.