Cam, especially depending on age and person beliefs, a person may interpret sexual urges as a succubus. Some groups somehow indirectly teach people to blame external forces rather than taking responsibility for some actions, or accepting some aspects of our biological construct are natural.
I have known several people who 'confessed' publicly in church while I was growing up, that they were 'under attack by' a succubus or incubus, as whichever case may be applicable, because they were feeling physical urges towards someone other than their spouse, or they were teenagers who felt tempted to explore their urges and thoughts when they were alone. Nobody ever told them it is natural to feel certain things or have thoughts about the people they are attracted to. They just blamed demons.
I do not know your friend, nor am I making accusations. But I do approach such things with caution.