hello i had the stomach flu about three weeks ago. my bofiend got it about a week later. he seems to think that he can get the stomach flu through giving me oral sex. can he contract the flu or other symptoms through giving me oral sex? i thought it was mostly transmitted by kissing and using the same cups, touching door knobs etc. i now have not been sick for three weeks and he is still afraid that he will get sick via oral sex. please give me your professional advice on this. thank you