
There were two best friends who were secretly in love with each-other but we're scared of other's reaction. And, then this other friend finds a book in the shelf of his friend's room which tells a story of their life, where he sees him getting married to some girl. Coincidences happen yah were as had been described in the book and he becomes superstitious.
P.s. this manga featured in the popular manga list, few days back.

do you mean this one?
http://www.mangago.zone/read-manga/one_step_from_the_end/
Is there any limit to it? I feel like some of the mangas that I had put previously have been removed.
I don't think there's a limit to it... Some manga I've read but it says I haven't bookmarked it but I just thought it was because I used to read manga on mangafox before. I hope it's not removing any from my list... (sorry for bad grammar)
Sometimes I have had glitches that have not saved manga I added to my "reading" or "already read" pages, but as far as I know there isn't an actual limit.
Same. I used to read at Magnavox before, as well.
Yeah. This happened to me as well. So, I wondered whether such was the case.