Me and my friend are at least 1000 blocks from each other and the portal don’t link right

My friend placed his portal first when he went in I placed him in the nether at x125 y 72 when he went back through instead of coming back through the portal he placed it placed him 200 blocks from his original portal it did me the same I placed mine underneath my base it put me in the same place his portal was in the nether and when I went back through it placed me close to his base