The texts before you met do seem to have a flirtatious connotation. The two major red flags you've listed are definitely a bit concerning but I dont think you really have much of a case just from him asking her to go swimming and possibly checking her out.
But if it makes you uncomfortable that's valid. You can't stop him from seeing her but you can discuss with him the things he says to her or about her to establish some better boundaries.
UpdateMe!
Might have to tell Joe Goldberg he needs to move on.
I always start mine with “i want to break up”
Im autistic, it's straight to the point and it doesn't leave any room for misinterpretation.
The texts before you met do seem to have a flirtatious connotation. The two major red flags you've listed are definitely a bit concerning but I dont think you really have much of a case just from him asking her to go swimming and possibly checking her out.
But if it makes you uncomfortable that's valid. You can't stop him from seeing her but you can discuss with him the things he says to her or about her to establish some better boundaries.