I have been seeing a lot of posts lately on this subreddit talking about how if a girl is into you that she will make it very obvious and you will never have to doubt it. Although there is some truth to this, I hate to break it to you guys, but a lot of the times when girls are feeling you like that, they won't come on to you as strong as you think. Although sometimes they will make it very obvious by staring and smiling at you or overtly flirting with you, many of the times they will give off subtle choosing signals like standing near you, making random small talk, etc. Many of these subtle choosing signals are easy to rationalize and doubt if you are a guy with low confidence with women. My rule of thumb is when in doubt, ASK HER OUT. If you think that any girl MIGHT be into you, then the best way to put her on spot and know for sure is to ASK HER OUT. If she says yes, then she was actually flirting with you, if not, she wasn't and just has a bubbly personality or was flirting with you for attention without any intention of actually making anything happen with you. It's that simple! No need to overanalyze all the different what if possibilites! So the next time you guys get a vibe from a girl but aren't quite sure if she's actually into you or if she is just being nice, ask her if she would like to get a drink or hang out sometime! Worst case scenario, she says no and you saved a bunch of time and you can quickly move on to the next girl!