I do so much for him and get so little back
It is sad if you feel this way. If I were you I'd stand back and look and see if this is really the case, or your perception of it.
My reason for saying this is that, in my own limited and very personal experience, 'very romantic' people (my exH for example) assume that they are in the right and that if you are in a romantic relationship then you ought to be very romantic.
One of my husband's biggest bugbears was that I didn't send him cards on 'special anniversaries' or things like send him flowers at work or think of grand overly romantic gestures. Where as I would rather spend time cooking someone their favourite meal to show that I care. But to him, that meant nothing without an accompanying Hallmark sentiment. To him it was actually preferable to receive a £2.50 card rather than the time and effort that went into something else more meaningful!
I am romantic, but I do prefer to show I care in some of the ways AMumiInScotland said. I used to pick him up from train station every evening when he was working and I wasn't. I would look forward to seeing him and if the weather was bad, not only did I still go willingly and not mind, but I made sure I was there early so he didn't have to wait at all (even if it meant I did because the train was late) and I made sure he had a cup of tea waiting for when he got back. But he looked genuinely bewildered when I pointed out this was a sign of love, because it wasn't an "I love you xxx" scribbled on a bit of paper and slipped into his pocket!
It really irritates me when I read these threads because my experience of people who complain about this have unrealistic expectations. Of course, it could be the case that he never does anything nice for you and takes advantage of you, etc, in which case, that's a different issue to being underwhelmed by a text about a non-anniversary