According to Aquinas, does "love" towards something always bring "desire" towards that something? According to Thomas Aquinas, does "love" towards something always bring "desire" towards that something?
St. Thomas Aquinas defines love (amor) as something that "belongs to the appetitive [spec., concupiscible] power which is a passive faculty" (Summa Theologica I-II q. 27 a. 1 c.).

"Love (amor) is something pertaining to the appetite". (ibid. I-II q. 26 a. 1 c.)"Passion is the effect of the agent on the patient." (ibid. I-II q. 26 a. 2 c.)

A sensitive appetite (i.e., an appetite pertaining to the senses) can be concupiscible or irascible. St. Thomas says (ibid. I q. 81 a. 2 c.) that the concupiscible appetitite is that


  through which the soul is simply inclined to seek what is suitable, according to the senses, and to fly from what is hurtful


The irascible is that


  whereby an animal resists these attacks that hinder what is suitable, and inflict harm


When you say "desire," it seems you mean what St. Thomas calls desire/cupidity or desiderium/cupiditas (cf. ibid. I-II q. 40 a. 1).

Hope might be the irascible analogue of "love" that you're looking for (cf. the aforementioned article).