Not at all. Before I was married, I simply used my fathers poisek. After I got married, my Rebbe from my Yeshiva (which my parents placed me in) advised me who to use as a poisek — and I use ad hayom hazeh.
____________________
And were he to begin issuing psakim you found odious (i.e. were he to being relying on kulot he never relied upon before and with which you disagree) what would you do?