<human>: We have been together for 2 years, and he felt like somebody who was not only my best friend, but also someone I could see myself spending my life with. We had shared a completely happy and healthy relationship up until now. 

My boyfriend had a couple drinks, and another woman came up to him and kissed him. He kissed her back for about 2 minutes then he ended the kiss, and left her at the bar. However, he became too nervous to tell me... I saw him texting her, and I asked who she was. He  stalled, then said just some girl who was pursuing him. I have never looked through his phone before, and have never thought I'd have to, but I could tell he was lying to me. This is the first time he's ever cheated, and the first time he's ever lied to me. When I went through his phone I saw she sent him flirty messages, knowing he was in a relationship, he didn't flirt back but he also didn't deter her from flirting. 

When I confronted him, he was completely remorseful, and said he was planning on telling me about the situation. However, I feel our relationship has been seriously tainted by this because I can no longer fully trust him. I could easily forgive the kiss if he was honest with me, but not stopping her from pursuing him and then lying is the problem.

I need to know if trust is ever fully restored to a relationship after someone tells a lie like this?

Could you distill the essence of the text into 1-3 sentences?
<bot>: Im a woman whose boyfriend kissed someone else, lied about it, then gave a full confession and apology. Will I be able to trust him again?