Charity411, while it really doesn't change anything based on what you were saying, I did want to clarify a couple things:
1. the "beach stalking" happened only 1 week after the breakup.
2. She broke up with me over the phone, with very little explanation, and no discussion on a Friday night. She deleted me as a friend on Facebook the following night. I texted the day after that (Sunday) asking if this is really what she wanted, and if so I would move on, or could we discuss this. She easily could have responded "yes, this is what I want", and I would have left it at that.
3. The "more meaningful" text I sent 3 days later said that I had done some self reflection and realize that there were many things I could have handled differently in our relationship, that I let her down and that it breaks my heart, that I love her, and that when she's ready to discuss this, I'm ready to listen without getting defensive.
4. I went to the beach 2 days later - exactly 1 week post breakup. I still don't exactly understand WHY we broke up, so I wanted a conversation just to understand.
5. There are lots of beaches where we live. For her to know where I was and book a hotel room right there, then post it as "public" on Facebook, instead of just to her friends (in which case I wouldn't have even seen it) was a little weird.
6. When I approached her at the beach, I was calm and simply asked to talk. Her sister was with her and could have stayed while we talked. In retrospect, I'm sure she was spooked as you say, but that wasn't my intention. I couldn't know that she was right there - 1 week after our breakup - and not at least try to talk to her. I thought it was a romantic gesture.
Some differences in my relationship vs. yours is that from reading your profile, it appears your stalker boyfriend cheated on you repeatedly and treated you very badly, including ridiculing you in front of friends and family. I did none of those things. I don't know if you broke up with him in person or on the phone, or if you had a conversation with him at the time of the breakup? I was broken up with over the phone, little explanation, and no conversation. I also have teenage daughters who grew to love my ex, and I have come to love her teenage sons.
An abrupt breakup like this, when we had been talking marriage and everything sounded great when I left her house the night before our breakup, just is weird. That doesn't mean you're not right, and she's certainly allowed to break up for any possible reason she wants, but it just didn't seem to make sense to me. Not so much that I didn't agree with the decision to be broken up, but more that I was rather taken by surprise.
Even when I found her at the beach, she could have said "it's over, I have nothing more to say", but she instead told me that "this wasn't the right time to talk because she had been drinking" and that we could talk sometime soon. Since that was the last thing she said to me, the only thing that changed was the fact she texted my friend to say that I had come to see her at the beach. I didn't know if she use the word "stalker" or if he did.
I called her brother-in-law 3 days later (less than 2 weeks post break up), just to wish him a happy birthday. He asked how I was doing, and I told him I was taking the breakup hard. He encouraged me to reach out to her again, that he didn't think this was the end. That's why I tried one more time the following day - I had left a voicemail asking if she and I could get together to talk. If the brother-in-law hadn't encouraged me, I probably would not have reached out again - though I definitely would have wanted to.
So, I only tried for 2 weeks - 2 texts, one beach visit, 1 phone call to her brother-in law to wish him a happy birthday, and one voicemail to her the following day.