Does he like his “friend” more than me?

Anonymous
I recently started seeing this guy. I met him at a party and he has invited me on many trips with him after dating.
when I talk to him he doesn’t really seem interested in what I say though, yet he talks to me every single day. But when he talks to his friend Jessica, he always pays attention to her. I catch him staring at her a lot. I wonder why does he even invite me. She lives in Spain and he has known her for a few years.
We even stayed at his parents house together when we all went on a trip together and even his parents seemed to gravitate more towards Jessica. I’m a shy person, I know this about myself. I feel weird sometimes but I know I’m very kind. I try my best and sometimes I don’t know what I’m doing wrong. I know I tend to overthink a lot, but I just don’t want to feel like someone’s second choice.
Updates
+1 y
When I asked him about it, he said she’s like a sister to him
Does he like his “friend” more than me?
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