Is my brother too close to me?

so my brother and i have a 12 year age gap…we have different moms and share the same dad so when our dad passed when i was a baby we completely lost contact. now…15 years later we finally reconnected and are starting to hang out and learn stuff about each other. we talk everyday and hang out every weekend. when we are in person we sit next to each other and sometimes stay up all night just talking to each other. the thing that i’m kinda wary about is that sometimes when we are talking he puts his arm around me or lays on my shoulder ( mostly at night and we are both super tired). he’s also recently went through a pretty bad breakup and is telling me that why be in a toxic bad relationship when he can do all the fun parts of a relationship with me knowing i won’t “breakup” with him. He also tells me things that he’s never told anyone else before. I don’t rlly have many friends or people to talk to/about in my life so i feel like i talk to him way too much for him to be my brother but i also feel like we are just making up lost time yk? We’ve only known each other for a month or 2 now so i feel like we kinda got way to close way to fast…Both of our families are very distant and neither of us have had a “normal” sibling relationship so i really don’t know if this is normal or not

Is my brother too close to me?
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