[¯|_(ツ)_|¯]

Hey,

This does sound confusing!

Exploring is natural, and as long as everybody was consenting it's fine. It doesn't necessarily mean you're gay just because you explored either.

I'd message her and start out by saying that she's still welcome to come and stay in July (if she is) but you want to talk about what happened at the swimming pool and what it meant before she comes over. You can say that you're confused about what happened and where the two of you stand now. Let her know how you feel about what happened and ask how she feels about it as well. The two of you can then discuss where to go from here and set any boundaries you feel are needed before she comes to visit in July.

Basically, the important thing is to be honest about how you are feeling. Try to remain as calm as possible when telling her what's going on. It's important you clear the air before she comes in July, so it's probably good to do this sooner rather than later.

Best of luck!
Dez