Known as the heartthrob of the group, Harry has been linked to a string of celebrities during his rise to fame.
Speaking on ITV's Lorraine, Harry said: "I think people who would approach someone in that way for the wrong reasons are usually quite transparent. I think it's pretty easy to tell what someone's intentions are."
Sounds like Harry is a good judge of character!
Harry was joined by bandmate Niall Horan on the ITV daytime show, who also said he tries not to think too much about the constant speculation over his love life.
"You have to kind of get over it," said Niall. "If you keep reading all those stories it's just going to wreck your head but like you know whatever, you can have friends, we're all allowed to have friends."
The boys' talk on girls and romance comes as a new report emerged over the weekend linking 21-year-old Harry to 37-year-old Nicole Scherzinger, when he was just 19.
A report in The Sun claimed the pair had a "dalliance" at the end of The X Factor in 2013 and met up again early last year. Nicole was apparently on a break from Lewis Hamilton at the time and a source told the paper that they only shared a "snog" but "never dated".
Harry and Niall appeared on Lorraine to promote 1D's brand new fifth studio album, Made In The A.M. (which is out in November), and their new single 'Perfect'.
In the new year, 1D will temporarily disband to take some well-deserved time off after five gruelling years in the spotlight.
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