She's not the woman I fell in love with--what to do?

I fell in love with a woman about two months ago whom I've been communicating with online and by phone. We talk on the phone every day for hours, but we live about 250 miles apart. The photo she showed me at the start, I found attractive and have that image ingrained in my mind. Yesterday, she snapped a few photos and shared them with me. To my eyes, she barely resembles the first one. She looks heavier and older and I don't find her attractive. I have a personality flaw where I can't see myself with someone I don't find at least somewhat attractive. I can't help it. The thing is, I don't believe she's unattractive to others, just not to my taste. There are plenty of women I find attractive that others do not. I'm not sure if makeup and losing a little weight will do it.

She said that the first photo was taken only a few months ago. That seems either unlikely or else she changed quite a bit in that short period of time. There are other issues I've been concerned about and I feel like this may be enough to "break the deal". What do I do? What do I say? I don't want to hurt her feelings and I'm a very bad liar. I'm sincere and honest to a fault. I should add that we once discussed my flaw about attractiveness, but only in general terms and not about our situation.