Its coo to see everyone coming in together for encouragement\
Most of us absolutely would love to have that one loyal woman for life who you can build with and never have to worry about, but realistically, if you are not prepared for a woman to walk, then you'll be in a not so pleasant situation in the future. If you find that gem, excellent, but there's no use in putting the enjoyment of your life on hold until you find that woman. There's so much other things to do than be fixated on women. Enjoy them while they are here, but if they leave, still enjoy your life. Women should be like a snack... something you'd like to have, but something you can do without if you don't have.
What you SHOULD be focused on is building up your life and putting yourself in a better position. When you handle your business, and you really start getting things together and enjoying life, you make it way easier to meet and interact with women as a side benefit. Sitting around moping and worrying about this or that woman is a loser's game. We've all been in situations where we lost women. At the time, we thought she was 'the one', that it would never be the same, etc., but once time passed, our emotions subsided and we found other women we could connect to... so bottom line is, there is no singular woman that you absolutely must have. You just have to realize that in your mind. Spending all your time being some PUA type of dude is a waste of time when that time could be spent just improving your position in life and in enjoying life. The women will come to you naturally.
One of the keys though is to be social. Get out and about and don't be pasted in the house if you don't have to. If one woman leaves, in a way, you should feel a bit of excitement because it opens up an adventure of you meeting another interesting one. If one woman couldn't appreciate what you brought to her, no need to sweat. Maybe when you're at the bookstore, at school, in the grocery store, etc., you'll meet an even more engaging one. The only woman that is indispensable is the one God puts in your life and you'll know because you won't have to worry about the nonsense about her 'making you insecure' or playing these nonsensical games.
I was watching an interview about the Cowboys landing La'el Collins, an undrafted free agent. You know the best part of him signing with the Cowboys? He WANTED to be there. That's how it should be with any woman you deal with. If she doesn't, of her own volition, WANT to be there, then let her butt go.
All of that 'I should have did this or that' stuff is nonsense. There was just a thread and in it a woman was talking about how her boyfriend treats her like trash and yet she is still around. A woman that wants to be around will stay around. There's no use in expending an iota of thought or emotion on a woman who doesn't want to be around. Save that emotion for one that does.