bro, your story is changing everytime. it actually went like this:

i asked for vines, you said you had loads, and told me to meet at spawn. i was in my grinder, and that's where i wanted the vines. you gave me them, i said thanks. the water was on the whole time, that's how my grinder works. i was getting the vines from my inventory to my hotbar to place them, and you jumped in the water, you then fell down the hole, and died. i said "lol, dont worry ill tp you back." and then went to my house which is close, and tp'd you outside so you could collect your stuff. you got your xp, you got your items. you may have lost some, but oh well. also, if it was too dark for you to see in there, why did you run and jump around, instead of waiting, turning up your brightness, or tp'ing away? it's not too dark to see in there, with brightness on bright, or moody. so it couldnt of been too dark to see.