So there's this girl 😍😏

So I've been talking to this girl for awhile now but she's a 9th grader and I'm a 12th grader ;-; and I really really like her and I know she likes me to but Idunnos if I should wait for her to ask me out because she more manly than me or do I ask her out cuz I'm older? Someone help or is it wrong cuz I'm older then her