I think my brother maybe has feelings for me. Help?

ok so ive looked up what to do if your brother got a crush on you or how you can tell if he does but all i found was incest porn and questions that are obviously fake lol, ok so basically me and my brother have always been really close like when we were little we were partners in crime and we were always together. were still very close. me and my brother have always been really affectionate towards each other like we cuddle on the couch we share every thing together we hug and kiss on the cheek or a peck on the mouth. we were always very touchy feely but in the last month and a half he started to stay in my room with me i loved having him with me and we would hug and cuddle watch movies talk while we go to sleep whitch dident bother me cause its not unusual for us,but he has started to get very intimate with his touching and he does it alot recently like for example i was cooking lunch he came up behind me and just hugged me kinda like a boyfriend or girlfriend would he also does other stuff but lately hes been doing it really intimately. he also has been acting a little different like if i get close to his face he will blush somtimes or he will get really shy when he asks me to sit with him or something like that.hes been really wanting my affection and im not saying i think its annoying or i feel scared that hes gonna try and make do something i do not want to cause i know him well enough that he wouldn't dare do anything like that, but i think he has feelings for me that arent brotherly like when at night he will spoon with me and take my hips and hold me into his pelvis im also not sure if this matters but one morning when we woke up he had an erection but im pretty sure it was just because he was sleeping though but its happened a few times. also the other night we were laying together talking and joking around and he kissed me not like a sister. i could tell he knew he shouldnt have done it by the look on his face but i didnt want to make it even more awkward so i just pretended like it was normal and turned around and went to sleep. (i probably should have asked him why he did it thinking about it now) i think our innocent hugging and cuddling isnt as innocent for him as it is for me and if it is i want to definitely put some distance between us. i dont know if all this extra attention he has been giving me is coming from something that happened to him recently like with his friends or at school and he just wants comfort or if he really does like me in a way he shouldnt. I definitely dont want to tell my mom cause it wont help cause that will cause whole lot of drama especially if he ends up not likeing me that way so i only want to use her as a last resort. basically what im asking is do you think he may have feelings for me or can it be somthing else. if there is anything i can watch out for to tell me that he likes me in that way. also if he does like me that way do you maybe have any advice on how to approach him about it and not put a hole in our relationship cause i love him and i do not want to lose him? wow i wrote alot.