What does the "3" mean?

ive been having really scary dreams lately. the latest involved me killing sumone which is new to me cuz ive nvr had a dream with killing in it before let alone me commiting the crime. it was nobody i recognized either. however in all my dreams this week the number 3 has recurred constantly and sumtimes the number 5 but mostly 3. these dreams started sunday and i met this guy i really like tht same day so idk if tht has anything to do with it. the latest dream i killed a woman with 3 different pairs of scissors n it was scary cuz it was very graphic so it freaked me out. so anyway what does this recurring number 3 mean? and why do my dreams keep getting more and more scary the more i get to know this guy?