how do you avoid these emotionally draining situationships.

Simple. Don't have sex with a man without commitment. Ideally, that commitment is in the form of marriage. The men who want nothing serious will leave, and those that do want something serious will stay.

Also, universal advice for men and women is to not emotionally invest in someone who is not reciprocating. It certainly happens with many young men who are struggling just to get a date, though I think the same applies to women who need to filter out men who are only looking for sex.

Another thing, women who complain about men only wanting them for sex need to ask themselves what do they offer a man besides sex. Their answers should be things men actually want, not selling something to them that men are not asking for. And these women also need to determine what their selection criteria is for a man. If it is as superficial as him being tall and good looking, consider how many other women also want that same man. Would such a man want to commit to you? How realistic are you about what kind of man you should expect to want to commit to you?

Treat 2 legged deer the same as the 4 legged kind. Take the first clear shot you are offered. Do not delay but do not rush the shot from nerves.

This may feel like no answer but it is the best I know. All that it requires is to be able to judge when a clear shot is offered. Here you have to be watching the quarry not yourself.

The usual advice to spot a clear shot is to read body language and so meeting her in person is the best thing you can do, then you can see what she really thinks about you. When to suggest meeting up with someone you talk to mostly on line? I appreciate that this is going to be hard if you are not actually speaking to her but is she open to you? Is she flirting or just seeking attention and compliments? Is she genuinely glad you responded to her? Does she talk about her body just in passing? This can be quite telling I have found. When they talk about more private issues with their body then its quite likely they are interested. Like for example her light jeans chafed her thighs on a hot day or she feels bloated because its that time of the month. They are not trying to turn you on with these slightly embarrassing things, they have just shown you that you are someone they feel who is allowed to know this stuff. She is not feeling sexy now but another time when you think she is, you might ask to meet. What is the body language of her snaps? Is she concerned what you might think of her, particularly her looks and behaviour around men? Does she find your jokes funny (here you need to be able to tell the on line difference between a whores laugh -where she laughs because it pleases men when girls laugh a bit submissively- and a real one)? Does she want to know all about you? Is she interested to know what your plans are?

I think this evidence based approach will lead to a better hit to shot ratio. I appreciate that there are the guys who go straight out to escalate with any girl who shows interest in knowing them but these guys waste a lot of time on failures. The girls they get tend to be the easier trashier ones who don't mind going with random guys who escalate. I would try to keep things as natural as possible. If there is a rapport and she is acting like she might be open to you, then look further.

The advantage on your online presence is the exposure to a large number of females. The ease of access does mean you need more vetting not less, more time sifting randoms till they are not quite so random. Or else you will have to just be an absolute stand out Chad n your profile and be purely interested in sex and not care about any sort of compatibility.