By definition, catching an STD requires sex. In other words, STDs exclude things that can be transmitted by kissing. Open-mouth kissing is the most efficient way there is to transmit the common cold and other respiratory viruses, and that almost certainly is what is going on. (Maybe not coincidene, in other words; you might well have caught your cold or other virus from the guy you kissed.) HPV isn't an issue. Oral herpes is a theoretical possibility, but not considered an STD and anyway there is a good bet you already have it (half the population does) and therefore immune to catching it again.
Good luck-- HHH, MD
you wrote "HPV isn't an issue". im assuming you meant HIV...but im also guessing both arent an issue?? Thanks again!
Neither is an issue and it would be too early for any HIV related symptoms anyway.