I'm not in this situation, as I am married...however, I would try it this way...
I would begin by one day telling the possible interest that you've been very sick in the past. After seeing the reaction you can decide whether you want to continue that discussion or possibly approach it another time.
You can read how the conversation goes and this may tell you a lot about the prospectives of your future with this person. Hopefully you'll receive genuine concern and they'll ask for more information. I know the word "disease" is not the friendliest, so maybe call it an "illness".
Dating with an ostomy really would be something different. I commend you for getting out there and having a good time! I'm new to this world and looking forward to a social life all together! UC really put a cramp in all my styles.
But no more!!! I'm claiming my life back!!!
Anyway, I really hope you find someone considerate, accepting and the ying to your yang.
: ) Robin
28 year old Mommy of an amazing 1 year old and Wife for 2 years!
Dx-May 2007 Moderate/Severe Pancolitis - failed all medications
Proctocolectomy w/ permanent ileostomy on 02/06/09!!!
"Your mind is like a parachute, it only works when it is open." -Unknown