(LDS people only!!!?)?

ok theres this new missionary at my church and hes pretty cute!! we talk and everything and i got to get to know him and me and him have alot of things in common. on friday he opend my car door for me isnt that sweet? (= are lds missionaries arent suppose to do that? he gives me all these signs that he likes me and he even flirts with me. i can tell he likes me and i like him back!. yesterday on sunday he was flirting with me and then he looks at his companion so when he left his companion came to me and said hey so what do you think of elder _______and i said well hes cool, chill, & funny. and he said is that all???? and i said yeah. so basically i wanted to tell him that i like him and telling him how i really feel but i cant cuz hes a missionary and im not suppose to flirt or do anything while hes on his mission. idk what to do. hes not doing nice things to me anymore. i think to my self did i mess up? i dont want to ruien any relationship we have. i just want to tell hit me up when your done with your mission and then will see what happends next. should i tell him that. i dont want him to stop liking me cuz of what i said.... sorry if this is to confusing. .. i just dont want conquences later...