Lied ab deleting an ex contact

About two years ago when my bf and I started dating he was getting txted a lot by his ex. Always the ex Initiating. Either asking about old restaurants they went to, or asking him if any of her mail was getting delivered to his apartment as they use to live together.

By the time they last texted they mail situation was resolve. He was always annoyed about her texts.

I never really knew when they texted cuz he never told me, I never thought to ask, and I never go through his phone.

One night ( 2 years ago from today) my bf told me she texted him (at the time) 2 months ago about something that annoyed him. He said he deleted her contact. Idk what even brought up that convo. I may have been curious and asked when the last time they talked.

I never asked him to delete the contact. Never asked if he even had it. He voluntarily told me he deleted it. And for two years I believed it.

Today I find he didn’t. He hasn’t txted her in two years. But why would he lie? I never ever do much as gave him hints or looks or ANYTHING about deleting or blocking her. He totally just lied.

Today I brought it up. He said he never thought about it. When I pressed him he said he thought that that’s what I would have wanted to hear at the time.

I asked if he wanted the contact just in case she ever reached out to him , to which he replied idk.

Im not sure what to think of this. I guess my thing is, why even tell me you deleted it. I wouldn’t have cared if you didn’t. Now it seems more than just keeping a contact. Seems like keeping a line of connection intentionally.