I still feel like calling him here and there and then I remember he isn't around anymore.
この場合、次のような言い方ができますよ。
ーI still feel like calling him here and there and then I remember he isn't around anymore.
「彼はもういないのに時々彼に電話しそうになる」
to feel like ~ing で「〜しそうになる」と表現できます。
ご参考まで!