i started going out with my best boy friend/ crush of over a year only a couple months ago. he'd always known i had stomach problems/allergies, but when we actually started dating, it got so that i needed to tell him, because i couldn't just stay home when i felt bad without justifying it. i sort of tried to explain to him what was going on, but it's kinda embarrassing to talk about. so i know this seems cheesy, but i emailed him that "molly's brochure" thing (it's got a link on the main page), which tells what it's like to have ibs. i just cut out the parts which didn't apply to me, and sent it to him. (i told him i was going to send a thing explaining what's wrong with me so it wasn't a total surprise).it actually went really well, he was really happy that i sent it to him so he could try and understand what's going on. and he said he felt better because he was starting to worry that there was something really wrong with me (like i was dying or something), so he was kinda relieved. i think i'd wait until you start dating to give him the whole run-down. but it's worth it to have the support of the person you spend all your time with. and too, i think as long as you tell him that you'll do your best to try and not let it stop you from doing stuff, but that when you say you're feeling too aweful, he needs to be understanding, that might help from him feeling like you keep ditching him, and that it's not just an excuse.and like everyone will tell you, if he isn't supportive and understanding, KICK HIM TO THE CURB!!!good luck,midge.