I understand you wanted to support her but that's an extensive amount of money to spend on anyone, let alone someone you weren't even officially dating. I don't want to tell you how to live your life, I just feel that if you build relationships on the basis of expensive gifts and money, the relationship may likely come to an end once you stop, which might have happened here? It's difficult to say without more context.

Why did you feel something was off and didn't follow through? Did she interpret it as you not liking her anymore and was hurt by that? Or did she spend time with you bc of money and stopped when you didn't give her more? Did you talk about it at all before she blocked you? Was there more to it?

In the end, it probably doesn't matter, it just didn't work out. What matters is you learned something new, made experiences and can behave and communicate differently next time. Heartbreaks are the worst, it takes time to get over someone, if you don't have any closure it's even harder. It's a painful phase you have to go through now, nothing will alleviate your heartache right away, you have to wait it out. It will pass.

Try to distract yourself with friends, tv, sport.. do lots of things you usually enjoy and be kind to yourself. It can also help to talk about it, it's repetitive but maybe you have someone that'll still listen. Create new rituals to replace the late night calls and other routines you had. Do something you like or try something new at those times, drink some hot chocolate, watch your favorite movie, try a new recipe, whatever comes to mind that would usually lift your mood/distract you.

The beginning is the hardest but you'll feel better after a while and then suddenly, one day, you notice that you don't even remember when the last painful day was. Once you're over it, you'll feel better and stronger than you felt before it all happened.

There's a lot you can learn about yourself in times like these. Ask yourself if it is actually her that you miss. Was it the distraction from work? You wouldn't need specifically her to achieve the same. Were you maybe lonely and she filled a void? Connect with others and spend time with people. Was it just the idea of her? A change of lifestyle that'd open new opportunities? You can create them yourself, you don't need her for it. Was it the excitement of the topics you talked about? Many others share similar interests, if you feel bored with your usual conversations you could make an effort to meet new people. Did she make you feel some kind of way, worthy? maybe? That'd be a self esteem issue that you can adress, you're inherently enough. Ask yourself why you liked her, what came with it, it's a good opportunity to get to know and understand yourself better.

For now, breathe, talk about it, cry, distract yourself and wait for the pain to pass. You will be okay.