Its not going to be easy

Last few days have been difficult with the dutch lad here.
It seems every day there is me, Nina & him.
He’s a decent lad but it gets a bit too much.
One really annoying incident that happened was the three of us walking into a room and a friend assumed those Nina was a couple with the dutch lad.
I was a bit miffed about that.
I feel a bit insecure about the relationship at the moment. I don’t feel like I give her enough and sometimes I think she should be with someone more “substantial”.
I was fine before he came over. A lot of girls comment on how good looking this guy is…and then, like today, when Nina changes her hairstyle and she looks extra gorgeous…I just feel crap…lol.
I think we were both strongly heading down the “I love you road” before this lad came over. I still feel like I’m speeding down that road but I don’t know if Nina is aswell.
One of the worst things that happened was when Nina drove the three of us around for a couple of hours. She let him, nay, encouraged him, to sit upfront with her while I was left in the back.
And all they did was talk. I never got asked anything and when I tried to throw myself in the conversation I got no response.
He’s staying over at her place and I’ve told her roomate if he can tell me if anything happens. He’s said he will and I hate even thinking that way but I can’t help it.
I wish he was gay.