14 and 18 years old

do you think it’s weird that an 18 year old boy would kiss a 14 year old girl? my bestie is 14 and she and this guy are good friends but she isn’t interested in him like that but i just think it’s weird that he likes her in that way and he sometimes gives her a ride home after practice and after practice on Monday last week he kissed her and now he’s been texting her a lot about wanting to talk but she’s been avoiding him and even leaving early from practices.