Weird ass bf (long)

Sooo..... Idk wtf is up sis. Like ok heres the background story:

Im 16 n a virgin my boyfriend is 17 n hes definately not a virgin. He says that he likes that i am a cirgin tho (idk lil weird to me tbh).

He shared this erotic dream that he had n it involved doggy style (question: is that ONLY butt stuff?) N hes also made a joke (in meme form may i add lol) abt fisting (idek what that was until he explained it) n anal.

^[im like actually ded tho. Like i thought it was funny bc i thought the fist meant punch then he explained n i think he was serious abt the fisting question so i told him "that would probably rip me open" n he just laughed. i think bc he didnt know what to say]

N I mean im glad hes open with me but this seems like a lot tbh. I do like him SO very much. To shorten it i think i just want to feel good n make him feel good but idk if i want to go in the direction (litterally and metaphorically hehe ) that hes going into rn. Idk how to deal tbh. N a sis is a lil spooped cause he TURNS ME ON sm but i dont tell him bc im not sure if i want his dream or jokes to be a reality yet. Idk lol. Any tips on what to do? Bc oof... Sis is a lil shook abt the butt stuff :/