How far back did I set myself?

I would like to think this doesn't count as a full on relapse since I didn't watch P or do any touching. But to make a long story short I looked at some girls on tinder right before bed, and it got me kinda excited. I went to bed and tried to think about other things and not fantasize. But I was awake and laying in bed and ejaculated without touching in my pants like a WD. I am wondering how bad this is and if it's going to totally start me over.
I know looking at that kinda stuff is bad but considering I didn't do pmo I am hoping this isn't a full on relapse.
I should add that I was on day 96 when this happened and I hope this doesn't hinder my progress.

 

Thanks. It sucks because I was just innocently using tinder, not trying to use it for p subs. Honestly the P I normally looked at was fetish type stuff so the fact that a girl in a bikini had me that worked up made me feel like my brain has fixed itself a little bit.
It sucks that I ejaculated because I really wasn't trying to fantasize and was doing all I could to meditate and get my mind off those pictures.
If it is a relapse, atleast it isn't a relapse on pornography and I didn't binge watch that stuff all night like before. I hope I can just keep pushing and use this as a lesson learned and not fall back into worse stuff.