Is this a gay thought!? im a guy! ( PLZ help)?

i read my sister's playgirl just out of curiousity i wanted to know what kind of guys girls liked so i looked at one guy and i thought that he was handsome and had a nice six-pack is this normal!?? i just wanted to know what girls liked i still like to see girls but now when i look around me i look at men too,i dont know i just look at them for stuff i could use for myself but is this okay!? please help