Gaining

Hi to all,
I have been dating my girlfriend since we were 17 y/o and during these years, now we are 24, her weight went from 76 kg (167 lbs) to 95 kg (209 lbs), she is 176 cm tall (5.8 feet). What can I say? She likes to eat and I am a FA, anyway she says it's not my fault because she just likes food. She went under several diets but didn't seem to work, now she's under another one.
Now my question is, how many probabilities are there she will be fatter in the future? I mean, maybe we will get married one day...

How about telling her how you feel about the way she looks?

Yeah, that was the question. Anyway I already tell her I like her fat, rolly and bulging! Does anyone of you have a girlfriend or wife who fattened during the years? Just to know the dynamics! ;-)