I'm a male, 23 and let's call her Jess. She is 22.
Me and Jess go way back. I've known her since high school, but as my friend had a crush on her, I'd never ever hit on her, even though I find her attractive.
After my friend had no success with her, I had no interest in her as well, but this took like 2 years.
We always kept contact, but not as close friends, just friends. She had two serious relationships, and recently (like three months ago) she ended her relationship with one common "friend" among us.
I'll tell a little bit of our history here because it matters for the question:
Since we've never been close friends, I asked her out on 4 opportunities these last 3 months and for my surprise she accepted all of then.
Two interesting events were these:
1 - I Invited her in something like a double date to watch a movie, all went well.
2 - As she had a guy pursuing her, she asked me to come with them to the bowling and it went really well for me (poor guy, I feel him). I think that she just asked me to join to make a statement for the guy that she had no interest on him. But then again, this is just what I think of the situation.
What bugs me:
She also invited me to watch The Last Jedi, just because she knows how nerd I am. Jess doesn't even like Star Wars. We went out to dinner, just the two of us and she was really excited to see me. Was laughing at every dumb joke that I made, was messing with her hair and a little physical contact with me, points that I think it is flirting. As soon as I know, I was fixing her hair and stuff like that.
From my perspective, it was very obvious that I have romantic intentions with her. IRL, we are really good together, with intimacy and stuff. But when it comes to interactions between social media (like Whatsapp) things go to shit. She takes a long time to reply, like 6 hours or even a day, but always reply friendly, saying sorry sometimes for the late response but keeps doing the same thing over and over.
This for me is a clear signal that she doesn't want anything to do with me, but our interactions IRL signals the exactly opposite. I'm afraid that going on and tell her how I feel so soon may blow every interest that she may have on me.
I intend to keep seeing her, but I would like to know if there is anyway, or tips that I could confirm if she has a interest or not without blowing everything up.