Thank you well..
1 yes I have some ideas for that but I have to see
2 yes for sure just thinking which one will add
3 maybe but probably not
And you are welcome to question but be aware that I may not answer
Apologies for that. But I would suggest say someone gets the spell put on them. They would then be able to transfer the spells properties to others through touch or more romantic/sexual action.
I know that could probably be a bit of a more long winded process and possibly not in line with the story you wish to tell. Just an idea/suggestion is all.