I'm sorry a lot of you are having such unhappy days, and feeling so low about yourself.
Not to jump on the 'leave him' bandwagon, as I know it's not usually as simple as that, but the comparison between my Valentine's Day 2 years ago and today is huge.
2 years ago - in an unhappy relationship, not appreciated, very overweight from comfort eating about relationship, got a card but looked at it and thought it wasn't how he really felt, suspected he was having affair, was drinking far too much, not sleeping, felt trapped and life was just awful.
Today - in my own flat, happy as Larry, free, relationship with lovely man who appreciates me and makes me feel good, lost 3 stone without any effort at all, rarely drinking, sleeping fine, looking and feeling 10 years younger.
My point is that life doesn't have to stay the same. Changing it is very, very hard, true. But if you aren't happy - you are worth the effort.