“My boyfriend has Saturn conjunct my Sun. Will he hold me back?”
He may but he may also be the best thing that ever happened to you. It’s true if someone has their Saturn in aspect to one of your planets (particularly the personal planets: Sun, Moon, Mercury, Venus, and Mars), they will have some authority over you.
They may be older, more experienced, more educated or whatever form this takes but you can’t tell from the chart how they might express this “advantage”. Will they be a mentor, an oppressor or a combination of those?
Also, this aspect works in reverse. Saturn tends to feel old and insecure at least at times so the young upstart (you) may trigger these feelings.
Ultimately the onus is on the Saturn person to act responsibly and “do the right thing”. How well people manage this can be determined by their maturity level which has very little to do with age. My 9 year old son restrains himself (Saturn) while his friend and peer oppresses (Saturn) his younger sisters so just keep that mind when you run into this situation in synastry. Are you being supported… or crushed?
Is there someone in your life who chastises you? Check and see if their Saturn is in aspect to your personal planets and tell us…
Check out the synastry in your relationship!