<human>: Can you give me a shortened version of the text?

So I dated this girl a while back and it was pretty serious or so I thought but she ended up with my friend. Everything is fine now since I no longer hold anything against them and I actually like them together.

I'm friends with both of them and I've been dating another girl for about 4 months and I'm very serious about us but recently I've started to develop feelings again for my ex who is still dating the friend she left me for. I told him and we worked everything out but the issue I'm worried about here is how I confront my current girlfriend with this. I don't like my ex more than her I just have a small crush but even if it goes away in a week I still feel I should tell my current girlfriend. What do I do?
<bot>: I'm developing feelings for my ex whom I have a complicated past with. I'd like to remain friends with her but I don't know how to go about telling my girlfriend about these feelings.