Culture, law, and moral codes vary in the us depending on the state, the religion or a current hot button issue.
Some guy buying my daughter a shirt after I asked him to back off hits my mama nerve.
Our recent ancestors often played by different rules, so do other cultures currently.
A pedophile is an adult who is sexually excited by prepubescent children. Technically, that is not related in any way to the OPs post. Still men can be inappropriate, or stalkers, or grooming or abusive to post pubescent youg people. 50 almost and some men are still creeps. Some boys the same age as a girl can be a creeper.
Law be darned, if an underage girl or boy's parent tells you to back off, you should Better Part of valour and all that. If there is anything real happening, the respect will stand you in good stead later.