HI Kathy,
CIM is not something many gals enjoy doing. Only a few of the ladies I know find it comfortable, most find the thought of cum in the mouth nauseating maybe cos of the smell or taste. My present gf tried once and gagged but I appreciate her effort and don't insist.
Would agree with the bro that you should be taking extra prescaution if your bf is using WL services, the risks multiple many folds. However, I see it difficult for you to insist he use CD at this time of your relationship as you may have to tell him why you want him to do so.
I go to 81 with my gf every week and we see WL just outside the hotel. Kidded a few times to book one of them to join us. She said ok but she wont join and just sit there and watch!!! LOL. She tried turning the table and she wanted a young men to join us in threesome but I replied I don't mind, can get a close friend to join us...
Point is, don't do something you don't feel comfortable, may mean making sacrifices and really, is ur bf's tonguing all that worth it that you start risking your health for? Like other bros said, there are many in here who are more than willing to do it to you.
Cheers