Yes it can if in fact you had the virus prior to having sex with that person as sex can cause an outbreak in some people, it is highly unlikely that a primary outbreak would show up next morning it would be more likely to be a recurrance of having caught it previously ......
Daisy
Daisy, Can herpes show up the next morning after sex if you never had symptoms of the virus?
Herpes would not show up directly after sex, you have most likely caused trauma to your penis with the rough sex,try calming it all down a bit and see if that helps,on the other hand it could be an allergic reaction to something but it's unlikely to be related to your girlfriends multiple orgasms.
Is this a long term partner and were both of you checked out at an STD / GUM Clinic prior to having sex ??
Daisy