How can I know if someone is telling the truth?

That's why the handbook tells you to wait at least six months before getting intimate. I think there's been research on this, that it takes a compulsive liar about three months to start forgetting their lies. So sick months is long enough time to catch him in a lie, often several and get to the truth for most relationships. Obviously some men are experts at hiding their true nature and don't do the "reveal" until you're pregnant, but most don't have the patience to wait for months before getting some kind of "reward" (sex) for playing nice on a few dates.

As some time passes not only will it be harder for him to keep track of the lies he's told you, but you'll also be getting better at reading him (facial expressions and body language). Even after only spending a few weeks with someone you'll get a good idea of what their baseline behavior is so weird things start to stand out. You might start getting bad vibes, or your gut is telling you he's hiding something. Trust those instincts and start putting some distance between you.

LVM WILL tell on themselves, just sit back and observe.

Talk is cheap. Keep an eagle eye on their behavior and see how it matches their words and what you expect from them. The mask always slips given time. Men who lie to make themselves look good will quickly be undermined by their own actions. Strategy-wise, this is why FDS recommends rotational dating, so if you see a man’s mask slip after 2 months of dating, you cut him loose and have already been dating others. Your most important job is to never stop vetting and never put on the rose-colored glasses of believing his lies because you want him to be what he says he is!

I've never had a male who tells me he's rich actually turn out to be rich, and I'm now 47 years old. My family has money, and they've always said, "If you have it, hide it." It's very nouveau riche to go around bragging about how much money you have, and it also signals lack of confidence. If he's got money, all he has to do is take me to a fancy restaurant in his airplane. That's what one rich Chinese businessman that I used to date did. He was very kind and generous.

It's hard to explain because I seem to have a natural 6th sense for this (which is a big reason why I'm usually single--and haven't had many LTRs--I sniff out BS extremely quickly) but pay attention to micro facial expressions. Shifty eyes, a flash of a smirk, being a little too smooth, coming off a little to strong, something they say doesn't quite match with what you know from their personality or what you would assume based on their background...a lot of small things will clue you in to someone being "off" or "shady" well in advance of you having hard evidence of them being a scrote.

Just be nice and pleasant with him, but absolutely eagle-eyed to everything he's saying, doing, and in this day and age, posting and following on social media. Most importantly, don't let them know how observant you're being. If they think you're not paying attention or you've already gone goo-goo eyed for them, they will get sloppier. The truth will reveal itself.