OK I'm putting this in women's because really I'm not trying to discuss the whole relationship name thing - I just want a word to replace boyfriend.
See my comments and SP's comments here:
http://www.lpsg.org/78065-married-single-or-otherwise-2.html
Both of us have the same issue - we're women and we don't date 'boys' so why do we feel the need to use the term 'boyfriend'. Partner is a crappy sounding expression, SO is too fucking 'gen-X, hyperweb BS' for me, lover (as SP pointed out) really does emphasise the physical and 'this guy I'm seeing' is far too casual.
My 'boy'friend is in his 50's - he is not a boy - but I can't call him my 'manfriend', it sounds weird. I can't call him my special friend because that sounds like it could mean something else (no nasty comments now - ty).
Note: girlfriend is fine for older women - 'girl' is used for women far more than 'boy' is used for men so I don't have the same isssue with being a 'girlfriend'. It doesn't sound silly.
So help me (and SP) out here. What does a grown woman call a grown man she's in a committed relationship with?