Tristan Thompson took to social media on Sunday to wish the mother of his daughter True Thompson, Khloe Kardashian, a happy Mother's Day.

Special message: Tristan Thompson took to social media on Sunday to wish the mother of his daughter True Thompson, Khloe Kardashian, a happy Mother's Day.

Kardashian started dating Thompson in 2016, though there were rumors that he cheated on her while she was pregnant with True.

Rumors: Kardashian started dating Thompson in 2016, though there were rumors that he cheated on her while she was pregnant with True.

That may change after new allegations surfaced from a woman named Sydney Chase, who revealed on social media that she hooked up with Thompson

Cheating: That may change after new allegations surfaced from a woman named Sydney Chase, who revealed on social media that she hooked up with Thompson

Chase claims she has 'dirty' texts that Thompson sent her, with the NBA star and his lawyer insisting she produce the texts, which they claim do not exist