Depende. Kung wala naman siyang intention itago, hindi yan cheating. It is worst. It is blatant disrespect. Lost passion is better than lost respect.
Anyway, here is a hot take. it is a privelege mang-away ng partner then they would still be loyal to you. This is not a right. While conflicts are normal sa relasyon, wag mo ugaliing mag resort sa away.
Madali kasing sabihin sa kwento mo "nag away lang" to downplay your contribution sa nangyari, dahil hindi namin alam yung context. Maybe there is something in your means of communicating within a conflict that you need to improve. This will be useful even outside your relationship. Baka nga meron k na nyan, pero nakakalimutan mo gamitin sa relasyon mo e.