<human>: Could you distill the essence of the text into 1-3 sentences?

Me [24f] and my SO [27m] were in a relationship for 5 months.  About a month ago he began putting in tons of hours at work ( >80 hours), trying to start a serious business. We used to spend every weekend together, and he texted me multiple time a day.  However because of his work, time spent with him and contact has fizzled out. 

We talked about this, and he apologized for neglecting me and felt really bad.  He went into great deal about his work, and how he literally had no time.  He then told me that I should find someone else who has more time, However that we should remain in a "causal relationship"  I reluctantly agreed.  

The day he told me this, he had helped me move into a new apartment closer to my work and to him. (He specifically took of the time to do this).  We had sex and he took me out for dinner.  He told me maybe if he finds a little time, that we could go to the beach, or he might spend the night at my place.  This made me confused. 

It has been two weeks, and I feel there is more to this "causal relationship" then he is too busy with work. I am going to ask him what the deal is; I feel like no time is just an excuse. I am going to officially end the relationship for my own closure.  I am sick of these childish games, he is 27.
<bot>: Boyfriend says  I should see other people but we should remain in a causal relationship, since he is too busy with work.  I think there is more to it, and want to break up.