言ってた I said or You said

Question

While translating something, I was wondering how should I do a certain a line because I can't determine exactly whether the speaker says it in a way talking about himself or is referring to another character.
So there are 2 characters that I will call A and B. A says:

まだ三戦しかしていないだろう

This, if I'm translating okay means "We only (or merely) fought 3 times", but the reply from character B had me asking just who was he referring to. He says this:

なんだよ。昨夜はずっと「もうやめてくれ」言ってたくせにさ

So I was wondering here, how would this line sound? I can see that he is quoting, my first interpretation was 'Come on, geez! Even when last night you kept saying "stop it already"?
Then I thought, but isn't it possible that B could say it like this?:
Even though last night I said "give it up already".

So, B could be quoting himself? Is that a possibility? Honestly, sometimes I don't know how to identify who was the one who did an action if I don't specifically have a pronoun clearly mentioned (like in this case, maybe if B said お前, I could go with my first translation).
I can deduce most of the time without pronouns, but there are instances when I can't figure out.
I hope I explained well enough...

Answer 1

I think your first translation is right and thinking B quote himself is strange.

Your translation of A is I think perfect.

We fought only three times.

I think key is 〜してたくせに.
In conversation, This phrase is mostly used to quote and criticize other’s behavior .

and I also think you can deduce the person who said「もうやめてくれ」from context.
In this sentence, A is trying to provoke B to continue “fight” with A.
So you can deduce that B said something like “ I want to stop fighting” or B couldn’t continue to fight before the A’s sentence.
And then B respond 「なんだよ」. this represents little sulking of B.(I don’t know “sulk” is correct word of ふてくされてる in English)
the reason why B is sulking is A change his attitude to “fight”. last night, A said「もうやめてくれ」 when B tried continued fighting, but tonight A is trying to continue fighting even though B says someone like what A said last night.
This is my interpretation as naive Japanese speaker.

For the first time I reed your sentence, I thought you translate some kinds of BL book. Sorry if I’m wrong. If you explain the whole situation, maybe I can explain this more accurate