<human>: Can you summarize the given text in a few sentences?

Since the second week (and it's been mentioned a handful of times since) we've been exclusive. Things are perfect when were together, but I have some issue with our different ideas of communication (how often to speak, Etc).

Today, I caught her in a lie. I asked if shes seen her ex lately, because he texts and snaps her repeatedly. I plugged her phone in and saw one of them, talking about how they met for a run last week. I asked her when she last saw him - she said April. Since then, I've been distant but we spent the day together... Throughout she has repeatedly asked what's wrong, and I've told her that I don't believe it's been that long since she's seen him. I asked again, clarifying that I meant physical see and not just date. She then said "you have anything to worry about"- but wouldn't admit to seeing him recently. 5 or six times today since then she's asked what's wrong, I've said I don't want to talk about it, and then she says something negative about him ("he has a small dick" "he's not fun to hang out with") but then repeats that she hadn't seen him, even though I know she has at least twice (read no mentions of sex) since we've been exclusive.

My question: is it worth trying to forget about? Obviously I should not have seen that conversation, and without a clear admission within the small bit I read it seems rash to drop contact. Whether I had read those or not, her persistent seeking of forgiveness/me to drop the issue. Walk or forget about it? It's the best sex I've had and she puts a lot of effort into seeing me.
<bot>: lie about a sensitive topic early in a relationshp - walk because it sets a tone, or stay because it's fine despite this (and a little early for it to be an exclusive dating thing, even though it is)