The movie that had potential but it falls short (Spoiler)

Many aspects of this movie are lame like the fact he kidnaps her and u can't avoid the question how did he brought her to the pet place ? he has no car neither she does...he brought her on a box by bus ? that he barely could handle it ? wtf... and the ending like how did she get him there... 1 she slashed his throat (ok he might have not died but how did she stitch that ? with fkin tape ? there was even tape there ? how did she not get seen?), 2 how did she get out of there with noone seeing her ??? 3 how did she moved him to the warehouse ? did she wait for him to heal ? how did she make it without being SEEN ?and she has no *beep* CAR! and noone did search the place ? how did she get clothes ? his were all bloody and the cage was it the same ? how did she transported it did she make a new one ? lol... anyway this ending is kinda impossible to happen but lets say it did happen , i still find it a bad ending i mean i get it she used him to ''save'' her so she wouldn't kill anybody just feed her desires using him... i don't find that very likely i think she would just have killed him or joined him on becoming a murderous couple (i think that would be a better ending btw since the movie plays on ''love'' and the audience is made to feel them together.)

Anyway i didin't like the production of the movie, plotholes,cliché feeling until it twists and many choices the director made specially the ending but the movie had its thing going when you find out that she's a killer and not the typical kidnapped girl it surprised me because i thought it would be one more of those movies... and they're having conversations it gets pretty intresting the whole cat and mouse thing with ''love'' thrown in there it had me anxious of how it woud unveil and the characters also get to be likeable and i kinda wanted them to end up together but man the ending+beginning+plotholes ruined it for me.