Is my brother a pervert?

Hi, just call me ela, i'm 21 y/o, i have a brother named al, 38 y/o. The first time I felt awkward about him is when I reach 18, the night of my debut, he is one of my 18 roses, when he's turn to dance with me, he is touching my butt while we are dancing and it feels uncomfortable. In many years I am with him, he do something unusual unlike before. Sometimes, he accidentally (or maybe intended) touches my breast, sometimes when I'm done taking a shower, I saw him browsing on his phone but he is blocking my way out near the bathroom. And lately, he told me we are going in a vacation, then he told me also to book a hotel room, only the two of us, I told him to take our mom with us but he insist not to. I don't know what to do. The fact about my brother is he don't have a child neither a wife nor a girlfriend ever since. I think that is one reason he is like that, but I don't know. I feel scared, uncomfortable, awkward and nervous whenever he is near me. Please help me.
Is my brother a pervert?
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