1 year old kitten peeing on clothes...help!?

She is a cat now and not a kitten. Have her checked for a UTI ( urinary tract infection). If all is clear then your boyfriend needs to work on becoming friends with her. She is telling you, that she does not like him and will act out if this is the case. She has had many changes. new house, you leaving for work, a boyfriend that is there more often and this all adds up to stress. Remember, vet check first.