Okay, so here is the deal with guys and bars. The majority of guys will go to a bar with the hopes of getting laid, blown, see tits and get drunk...in that order. The only real guaranty that guys have, is getting drunk. It doesn't take much effort at all to accomplish this. Now here is the reality, guys will say what they think you want to hear in order to accomplish these other goals.
"You are so beautiful" = "I want to fuck you."
"You have the most amazing eyes." = "I want you to look up at me while you blow me."
"You have a great laugh." = "I like to watch your tits bounce when you laugh."
You can't get to know someone in a bar, only who they want you to see. Word of advice to guys, go to the bar with the sole expectation that you are going to have a great time. See a girl you may be interested in, introduce yourself, get a name, find common ground, suggest that you two should meet for coffee or dinner sometime, get a number, leave her alone the rest of the evening.
Here is what could happen, she could be interested in you and wants to know more about you and SHE comes over to you to continue the conversation or the number she gave you was real and you two get together for coffee and actually get to know one another or...the number was fake, she wasn't interested in you and you didn't waste your time.
Go out to have fun and you will succeed. Go out to get laid...have fun with your lotion and tissue later on.