Bail and explore on your own.

You asked your friend to come with you. Got upset when you thought he couldn't. Then got happy when he did suddenly arrive at the cave, but all of a sudden, in a selfish turn of events, you leave him there to explore on your own. You see a small gap in the cave wall and decide to squeeze on through, Luckily you don't get stuck otherwise you might have just had a scenario like those "step-bro" and "step-sis" videos you have been watching.

On the other side of the wall there isn't really much to see apart from a lot of bugs, clumped together in a corner and opposite that there is a really long dark tunnel. You pick up your flashlight from out of your duffel bag and decide to venture forward into the dark. You see a lot of weird things that wouldn't usually be there, no, haven't been in any of the previous caves you have ever explored in your life. It looks like someone has definitely been here before too, maybe 200 people. There's graffiti all over the walls of the cave but nothing that a human would do. Weird symbols coat the cave walls all the way down, wanting to see more you keep walking. It looks like something a sadist would do.

Are the walls shrinking? it seems like it's getting tighter and tighter, and the air is getting thick and hard to breathe in. Maybe its nothing. You're sweating.

DROP

You wake up to find yourself being carried by your friend, who is now clothed. What happened? Did you just pass out? was it a panic attack or did you have lack of oxygen? Either way you decide to stay away from that cave until you feel safe enough to go back. He carries you back to the front door of your house before dropping you off and asking if you can walk. You reply with a yes, but it sounds more like the groan of an alien than anything else. Your stomach hurts, your head feels like its pounding and at this point all you want to do is rest. You get a quick drink, head to bed and try to sleep.

In the morning, you wake up.