Is a make-up fast considered valid if a husband kisses his wife while she is fasting before Maghrib and intercourse does not occur?

If thighing does not lead to intercourse or ejaculation, the fast is valid; because mere thighing does not invalidate it. The jurists have agreed that thighing does not entail the rulings of intercourse, such as the obligation of ghusl or breaking the fast, unless ejaculation occurs.