You asked, in your opening post, for a male perspective;
You do, with respect, sound 'giddy' and you describe your would be paramour as being 'eager' - quelle surprise! All I can say is to counsel you to be very, very cautious. Very cautious indeed.
You are an adult and you admit that you enjoy the 'sexting', your prerogative, but, personally, it would be an absolute deal breaker for me if I were seeking a relationship. To my mind, and I am willing to be informed otherwise, it is indicative of those who are simply looking for a fling or casual, no strings sex and would put me right off.
In respect of your feelings about your body, that is, of course, purely subjective and your view that you are two stone overweight may not accord with the opinion of your potential partner who may see you as being a perfect size!
May I wish you good luck, but please be careful.