Theres this girl i know and we flirt a lot but i dont know if i should ask her out?

we flirt Alot im our school mascot and i slaped her but with my tail(go wildcats) but she laughed about it we make a lot of dirty jokes lol she hits me alot but like in a bf gf way i hit on her a lot and her friends chase me around the hallways ofschool and the other day one of her cousins held my shoulder and held her shoulder and was talking to us like we went out or sumthin i want to ask her out but if she rejects me i dont want to ruin our friendship