i am his fallback? rhetorical question

Hey! English is not my mother tongue, please excuse any errors on my part. i was seeing a guy from November, we were seeing each other once or two times per week and we had the talk that we dont want relationship but its exclusive and if something gonna happen or we dont feel it anymore the between us we are gonna discus it first, that talking was before 2 months and we agree to see each other more often also we had this ‘ i miss you, i want you stuff’. 2 weeks later after the talk he stopped imitate texting and i was the one who was doing the first move for 4 times in a row with no chatting only 1-2 line texting and no intention to organize a hangup from both sides because it was too cold conversion. that lasted about 2-3 weeks. because i felt that something is going too wrong in our situationship i asked him via text at 6 of mart if something happened and he vanished, he read the message and he respond after 10 days with and excuse (not exactly the same message) ” im sorry i had troubles i wanted to text you and called you but i forgot” i replied after 2 days and i said that maybe he didn’t wanted too much thats why he didn’t and he continue writing to me oh no i wanted really but i forgot it, you know how i am dont be mad at me and i replied that i dont want Scottish shower tactic and im not the fallback plan to anyone to remember and forget me whatever time he wish he said im sorry if i hurt you i replied to not think that im a vanisher and i asked him whats going on all this month because its not only the text that he was avoiding to reply all this days but also he didnt made any effort to see me at all and he said that his ex came( to his house? to the city? i really dont know maybe both) and they were talking and he was thinking to start again a relationship with her but after all he is preferring to be alone as i know and he likes it and he was working too much this time thats why he didnt. and i replied just an “ok” he saw it (yesterday this happened) and thats all . im totally a loser? whats going on ? first time in my life im in this situation for me all this years it was only one night stand and relationship not between .