query about a drawn game

I dont understand why my last game ended in draw when I did not ask for one,Any Ideas

I'll go and have a look

So it looks like one of two scenarios:

a) You accidentally clicked the 'Offer Draw' button and they responded before you could notice

b) They offered a draw and you accidentally accepted

Draws by agreement require both players to consent, meaning you must have accidentally accepted or done it without noticing.

In any case, a draw's a draw, so it won't affect your rating at all and you're not going to suffer from it.

That's not correct. Ratings change on draws unless the players are very close in rating or the game is unrated. The rating changed in that game

Oh really? I didn't think draws changed rating at all. Mine never do, even when playing opponents far better than me (rated).

Look carefully next to the names. By stalemating me, my opponent gained one rating point. Mine went down one. He should have gained more because he had overwhelming force and it was an easy checkmate.