Okay, so here's the deal. Your thought process is unattractive.
No matter how many great pictures you take, how many matches you get online, or how well you might hit it off with someone in the beginning, the thought process from the above post is what's holding you back. Right now, you're thinking and acting from a place of uncertainty and insecurity, and I wouldn't be surprised if you're unknowingly letting it manifest to a vibe women feel around you when they're with you in person.
When it comes to dating, the one thing you absolutely must become comfortable with is that everything doesn't always play out in black and white. What's more, you have to become comfortable with the 'not knowing.'
The minute you start trying to analyze, theorize, or create outlandish scenarios in your head, you're doing yourself a huge emotional disservice because it's causing you to develop early attachments to people that haven't even decided what they think about you yet. Even if that attachment isn't on a romantic, "have to have her" kind of way, you're still letting that person run laps around your mind. That's probably why you're analyzing calls and texts (or the lack thereof) with a fine-toothed comb, and why seeing women you used to talk to out with other men affects you.
That's also why you were dubbed as clingy, too.
In the early goings, especially with online dating, women don't owe you anything. They have lives, become busy, work, spend time with friends/family, and yes... they also go on dates with other men -- even if they're talking to you, dated you already, or still talk to you after the date. Now look, I'm sure you probably read that and thought "well, no shit." After all, nothing I said was mind-blowing about how women live their lives. However, those "well, no shit" points seems to become lost on you once you aren't getting the validation you want.
Ultimately, try to whittle your dating life into a more simplistic, easy-peasy form in your mind. Here's some examples:
- Dude, it's just words in a chat bubble. Relax.
- So what if she found someone else? Just means there's something better out there for me.
- If she doesn't respond, no big deal. I'd rather focus on women that really are interested.
- I'm not going to make excuses for her just because I like her. Couldn't hurt to get my name right.
- I'm fine regardless.
Hope some of this stuff can be helpful, man.