It seems like Thor could be in more trouble than just the destruction of Asgard as a new character could be pushing him to his limits with her tricks on the God of Thunder.
One character that has been highly rumored for the third Thor movie is Amora the Enchantress. She is described as "Thor's Catwoman" as she is at times a villain and a love interest for the hero, and could cause him problems with Jane Foster (Natalie Portman) leaving him at some point.
There is a rumored scene in the next Avengers movie that could hint at Jane and Thor breaking up with it described as Thor being found sulking at the bar in Avengers Tower. This is where it was revealed that the Asgard god is no longer with Jane because of her budding relationship with Richard who was first seen in Thor: The Dark World.
Adding Amora to the fold, especially with what is going on with Ragnarok and Asgard, could be an interesting addition and her role could be very similar to Anne Hathaway's Catwoman in The Dark Knight Rises. She enters and initially is against Thor, but could be won over and helping him by the end of the film.
The most likely scenario for introducing her could be an end-credit scene after one of the upcoming Marvel movie that shows the beginning of Ragnarok and her possible aid to Loki or whoever they are bringing in the hurt Thor's homeworld.
Thor: Ragnarok is expected to hit theaters on July 28, 2017.