Oh, joy — another comma splice.
Change the comma after minds to a period and begin a new sentence (yes, with a capitalized first word and everything) afterward.
Use an apostrophe with a possessive: partner’s, not partners.
Overnight, everyone on Earth gains the ability to read minds. You are horrified to discover the trauma running through your partner’s thoughts.
(I’ve assumed the POV character here has only one partner, but if that’s not the case, just place the apostrophe after the s instead of before it. Also, I’d like to point out that one need not have the ability to read thoughts in order to read emotions. Telepathy and empathy, although related, are not the same thing. Not that I’d know, of course… :-P)