My relationship ended bc I didn’t feel like a priority, but I was bad at expressing this. How can I get over this?

I sensed early at the beginning of my relationship that I just wasn’t a priority. My boyfriend was always busy or cancelling plans, and he was always busy with work. He had a big project going on at the time, so I often just let him be. After a few weeks of this, I just sensed it wasn’t going to work & maybe we should be friends instead. However, instead of bringing this up, or breaking up with him, I really wanted to try the relationship a little longer, and I stayed another month or two

This ended up backfiring & the relationship hurt me in many ways, like him not responding to important texts for 2 days, or always being alone. For some reason, I didn’t know how to express it or would express my discomfort in subtle ways. I would always suggest outings or things to do, but never had a solid “talk” with him that I felt weird, until about 2 months later. We broke up shortly after that bc he didn’t know what to do

He has moved onto another girl now & they are dating happily. I am miserable & alone 100% of the time. They are always happy & smiling (I’m sorry, I stalked) and I never got that with him. I really can’t get over it & my jealousy is painful. Perhaps…would that have happened if I had spoken up?

I’m a very reserved girl & it’s hard for me to always express what I want to say. I just can’t or don’t know really how! I know what I want to say I just don’t. I think my boyfriend was also a little bit intimidating, he was a serious guy & I didn’t know how to “lay down the law” or suggest things like solid date nights, or needing more affection from him in a concrete way etc. I just didn’t know how!

I feel insane, & very weak. None of this would’ve happened if I’d just been able to communicate & tell him. What do I do?
My relationship ended bc I didn’t feel like a priority, but I was bad at expressing this. How can I get over this?
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